./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 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_196c3a27-02e2-4921-8d55-2303b4c2668b/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196c3a27-02e2-4921-8d55-2303b4c2668b/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196c3a27-02e2-4921-8d55-2303b4c2668b/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196c3a27-02e2-4921-8d55-2303b4c2668b/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196c3a27-02e2-4921-8d55-2303b4c2668b/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196c3a27-02e2-4921-8d55-2303b4c2668b/bin/utaipan-Q6hlc19bkW --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 ebdf8b0d6633d593d56778eaf5218135ab2be92cae14e75cdda2462494f96410 --- 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-4e7fbc6 [2022-11-23 13:52:06,990 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 13:52:06,992 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 13:52:07,013 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 13:52:07,014 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 13:52:07,015 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 13:52:07,016 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 13:52:07,018 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 13:52:07,019 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 13:52:07,020 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 13:52:07,021 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 13:52:07,022 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 13:52:07,023 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 13:52:07,024 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 13:52:07,025 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 13:52:07,026 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 13:52:07,027 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 13:52:07,028 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 13:52:07,030 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 13:52:07,032 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 13:52:07,033 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 13:52:07,034 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 13:52:07,036 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 13:52:07,037 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 13:52:07,040 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 13:52:07,041 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 13:52:07,041 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 13:52:07,042 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 13:52:07,043 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 13:52:07,044 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 13:52:07,044 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 13:52:07,045 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 13:52:07,046 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 13:52:07,047 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 13:52:07,048 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 13:52:07,048 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 13:52:07,054 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 13:52:07,055 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 13:52:07,055 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 13:52:07,056 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 13:52:07,057 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 13:52:07,062 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196c3a27-02e2-4921-8d55-2303b4c2668b/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-23 13:52:07,096 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 13:52:07,096 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 13:52:07,096 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 13:52:07,113 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 13:52:07,119 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 13:52:07,119 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 13:52:07,120 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 13:52:07,120 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 13:52:07,120 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 13:52:07,120 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 13:52:07,120 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 13:52:07,121 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 13:52:07,121 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 13:52:07,121 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 13:52:07,121 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 13:52:07,122 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 13:52:07,122 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 13:52:07,122 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 13:52:07,123 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 13:52:07,123 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 13:52:07,123 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 13:52:07,124 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 13:52:07,124 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 13:52:07,124 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 13:52:07,124 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 13:52:07,125 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 13:52:07,125 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 13:52:07,125 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 13:52:07,125 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 13:52:07,125 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 13:52:07,126 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 13:52:07,126 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 13:52:07,126 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 13:52:07,126 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 13:52:07,127 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 13:52:07,127 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 13:52:07,127 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 13:52:07,127 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 13:52:07,128 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 13:52:07,128 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 13:52:07,128 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 13:52:07,128 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_196c3a27-02e2-4921-8d55-2303b4c2668b/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196c3a27-02e2-4921-8d55-2303b4c2668b/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ebdf8b0d6633d593d56778eaf5218135ab2be92cae14e75cdda2462494f96410 [2022-11-23 13:52:07,407 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 13:52:07,446 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 13:52:07,449 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 13:52:07,450 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 13:52:07,451 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 13:52:07,452 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196c3a27-02e2-4921-8d55-2303b4c2668b/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound2.c [2022-11-23 13:52:10,539 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 13:52:10,822 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 13:52:10,823 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196c3a27-02e2-4921-8d55-2303b4c2668b/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound2.c [2022-11-23 13:52:10,831 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196c3a27-02e2-4921-8d55-2303b4c2668b/bin/utaipan-Q6hlc19bkW/data/020bb54e3/bc8031aa00d746c29442e1d84b280c49/FLAGce606f72b [2022-11-23 13:52:10,851 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196c3a27-02e2-4921-8d55-2303b4c2668b/bin/utaipan-Q6hlc19bkW/data/020bb54e3/bc8031aa00d746c29442e1d84b280c49 [2022-11-23 13:52:10,858 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 13:52:10,860 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 13:52:10,866 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 13:52:10,866 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 13:52:10,870 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 13:52:10,871 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:52:10" (1/1) ... [2022-11-23 13:52:10,872 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@781d5d4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:10, skipping insertion in model container [2022-11-23 13:52:10,873 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:52:10" (1/1) ... [2022-11-23 13:52:10,880 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 13:52:10,899 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 13:52:11,076 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_196c3a27-02e2-4921-8d55-2303b4c2668b/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound2.c[490,503] [2022-11-23 13:52:11,096 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 13:52:11,106 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 13:52:11,118 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_196c3a27-02e2-4921-8d55-2303b4c2668b/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound2.c[490,503] [2022-11-23 13:52:11,128 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 13:52:11,142 INFO L208 MainTranslator]: Completed translation [2022-11-23 13:52:11,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:11 WrapperNode [2022-11-23 13:52:11,142 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 13:52:11,143 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 13:52:11,144 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 13:52:11,144 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 13:52:11,151 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:11" (1/1) ... [2022-11-23 13:52:11,157 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:11" (1/1) ... [2022-11-23 13:52:11,176 INFO L138 Inliner]: procedures = 14, calls = 19, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 77 [2022-11-23 13:52:11,176 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 13:52:11,177 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 13:52:11,177 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 13:52:11,177 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 13:52:11,185 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:11" (1/1) ... [2022-11-23 13:52:11,185 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:11" (1/1) ... [2022-11-23 13:52:11,188 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:11" (1/1) ... [2022-11-23 13:52:11,188 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:11" (1/1) ... [2022-11-23 13:52:11,191 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:11" (1/1) ... [2022-11-23 13:52:11,195 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:11" (1/1) ... [2022-11-23 13:52:11,196 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:11" (1/1) ... [2022-11-23 13:52:11,197 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:11" (1/1) ... [2022-11-23 13:52:11,199 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 13:52:11,199 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 13:52:11,200 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 13:52:11,200 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 13:52:11,201 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:11" (1/1) ... [2022-11-23 13:52:11,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 13:52:11,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196c3a27-02e2-4921-8d55-2303b4c2668b/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:52:11,237 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196c3a27-02e2-4921-8d55-2303b4c2668b/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 13:52:11,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196c3a27-02e2-4921-8d55-2303b4c2668b/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 13:52:11,284 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 13:52:11,285 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-23 13:52:11,285 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-23 13:52:11,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 13:52:11,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 13:52:11,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 13:52:11,286 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-23 13:52:11,286 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-23 13:52:11,362 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 13:52:11,365 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 13:52:11,589 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 13:52:11,645 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 13:52:11,645 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-23 13:52:11,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:52:11 BoogieIcfgContainer [2022-11-23 13:52:11,654 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 13:52:11,656 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 13:52:11,656 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 13:52:11,659 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 13:52:11,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:52:10" (1/3) ... [2022-11-23 13:52:11,660 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39c49ae2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:52:11, skipping insertion in model container [2022-11-23 13:52:11,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:11" (2/3) ... [2022-11-23 13:52:11,661 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39c49ae2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:52:11, skipping insertion in model container [2022-11-23 13:52:11,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:52:11" (3/3) ... [2022-11-23 13:52:11,662 INFO L112 eAbstractionObserver]: Analyzing ICFG egcd2-ll_valuebound2.c [2022-11-23 13:52:11,706 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 13:52:11,706 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 13:52:11,757 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 13:52:11,763 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;@241f7f6f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 13:52:11,764 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 13:52:11,767 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 16 states have internal predecessors, (20), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-23 13:52:11,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-23 13:52:11,774 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:52:11,775 INFO L195 NwaCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:52:11,775 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:52:11,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:52:11,780 INFO L85 PathProgramCache]: Analyzing trace with hash 966807424, now seen corresponding path program 1 times [2022-11-23 13:52:11,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:52:11,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399880966] [2022-11-23 13:52:11,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:52:11,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:52:11,897 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 13:52:11,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1263416097] [2022-11-23 13:52:11,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:52:11,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:52:11,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196c3a27-02e2-4921-8d55-2303b4c2668b/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:52:11,902 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196c3a27-02e2-4921-8d55-2303b4c2668b/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 13:52:11,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196c3a27-02e2-4921-8d55-2303b4c2668b/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 13:52:11,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:52:12,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-23 13:52:12,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:52:12,040 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-23 13:52:12,040 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 13:52:12,040 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:52:12,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399880966] [2022-11-23 13:52:12,042 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 13:52:12,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1263416097] [2022-11-23 13:52:12,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1263416097] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:52:12,043 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:52:12,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 13:52:12,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438217907] [2022-11-23 13:52:12,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:52:12,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 13:52:12,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:52:12,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 13:52:12,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 13:52:12,100 INFO L87 Difference]: Start difference. First operand has 30 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 16 states have internal predecessors, (20), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-23 13:52:12,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:52:12,133 INFO L93 Difference]: Finished difference Result 49 states and 78 transitions. [2022-11-23 13:52:12,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 13:52:12,136 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 26 [2022-11-23 13:52:12,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:52:12,144 INFO L225 Difference]: With dead ends: 49 [2022-11-23 13:52:12,145 INFO L226 Difference]: Without dead ends: 28 [2022-11-23 13:52:12,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 13:52:12,151 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 13:52:12,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 13:52:12,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-11-23 13:52:12,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2022-11-23 13:52:12,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 15 states have internal predecessors, (16), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-23 13:52:12,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 39 transitions. [2022-11-23 13:52:12,193 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 39 transitions. Word has length 26 [2022-11-23 13:52:12,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:52:12,195 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 39 transitions. [2022-11-23 13:52:12,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-23 13:52:12,196 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 39 transitions. [2022-11-23 13:52:12,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-23 13:52:12,198 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:52:12,198 INFO L195 NwaCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:52:12,209 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196c3a27-02e2-4921-8d55-2303b4c2668b/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 13:52:12,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196c3a27-02e2-4921-8d55-2303b4c2668b/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:52:12,404 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:52:12,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:52:12,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1643993843, now seen corresponding path program 1 times [2022-11-23 13:52:12,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:52:12,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789658610] [2022-11-23 13:52:12,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:52:12,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:52:12,429 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 13:52:12,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1521338392] [2022-11-23 13:52:12,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:52:12,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:52:12,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196c3a27-02e2-4921-8d55-2303b4c2668b/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:52:12,432 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196c3a27-02e2-4921-8d55-2303b4c2668b/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 13:52:12,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196c3a27-02e2-4921-8d55-2303b4c2668b/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 13:52:12,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:52:12,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-23 13:52:12,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:52:12,671 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-23 13:52:12,672 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 13:52:12,800 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-23 13:52:12,800 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:52:12,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789658610] [2022-11-23 13:52:12,809 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 13:52:12,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1521338392] [2022-11-23 13:52:12,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1521338392] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 13:52:12,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1720614145] [2022-11-23 13:52:12,833 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2022-11-23 13:52:12,836 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 13:52:12,840 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 13:52:12,846 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 13:52:12,847 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 13:52:14,070 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 58 for LOIs [2022-11-23 13:52:14,094 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 13:52:15,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1720614145] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:52:15,135 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-23 13:52:15,135 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [5, 5] total 14 [2022-11-23 13:52:15,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130363860] [2022-11-23 13:52:15,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:52:15,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-23 13:52:15,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:52:15,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-23 13:52:15,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2022-11-23 13:52:15,139 INFO L87 Difference]: Start difference. First operand 28 states and 39 transitions. Second operand has 11 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 6 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-23 13:52:15,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:52:15,369 INFO L93 Difference]: Finished difference Result 38 states and 50 transitions. [2022-11-23 13:52:15,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-23 13:52:15,370 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 6 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 27 [2022-11-23 13:52:15,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:52:15,372 INFO L225 Difference]: With dead ends: 38 [2022-11-23 13:52:15,372 INFO L226 Difference]: Without dead ends: 30 [2022-11-23 13:52:15,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 62 SyntacticMatches, 5 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2022-11-23 13:52:15,378 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 48 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 13:52:15,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 48 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 13:52:15,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-11-23 13:52:15,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2022-11-23 13:52:15,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-23 13:52:15,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 41 transitions. [2022-11-23 13:52:15,409 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 41 transitions. Word has length 27 [2022-11-23 13:52:15,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:52:15,410 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 41 transitions. [2022-11-23 13:52:15,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 6 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-23 13:52:15,410 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 41 transitions. [2022-11-23 13:52:15,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-23 13:52:15,411 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:52:15,411 INFO L195 NwaCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:52:15,421 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196c3a27-02e2-4921-8d55-2303b4c2668b/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 13:52:15,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196c3a27-02e2-4921-8d55-2303b4c2668b/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:52:15,617 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:52:15,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:52:15,618 INFO L85 PathProgramCache]: Analyzing trace with hash -575116102, now seen corresponding path program 1 times [2022-11-23 13:52:15,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:52:15,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85106056] [2022-11-23 13:52:15,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:52:15,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:52:15,633 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 13:52:15,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1172919837] [2022-11-23 13:52:15,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:52:15,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:52:15,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196c3a27-02e2-4921-8d55-2303b4c2668b/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:52:15,635 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196c3a27-02e2-4921-8d55-2303b4c2668b/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 13:52:15,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196c3a27-02e2-4921-8d55-2303b4c2668b/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 13:52:15,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:52:15,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-23 13:52:15,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:52:15,805 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-23 13:52:15,806 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 13:52:15,881 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-23 13:52:15,882 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:52:15,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85106056] [2022-11-23 13:52:15,882 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 13:52:15,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1172919837] [2022-11-23 13:52:15,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1172919837] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-23 13:52:15,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 13:52:15,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2022-11-23 13:52:15,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621826288] [2022-11-23 13:52:15,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:52:15,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 13:52:15,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:52:15,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 13:52:15,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-23 13:52:15,885 INFO L87 Difference]: Start difference. First operand 30 states and 41 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-23 13:52:15,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:52:15,973 INFO L93 Difference]: Finished difference Result 36 states and 46 transitions. [2022-11-23 13:52:15,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 13:52:15,974 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 28 [2022-11-23 13:52:15,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:52:15,975 INFO L225 Difference]: With dead ends: 36 [2022-11-23 13:52:15,975 INFO L226 Difference]: Without dead ends: 34 [2022-11-23 13:52:15,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-11-23 13:52:15,977 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 7 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 13:52:15,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 101 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 13:52:15,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-11-23 13:52:15,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2022-11-23 13:52:15,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 19 states have internal predecessors, (21), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-23 13:52:15,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 44 transitions. [2022-11-23 13:52:15,997 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 44 transitions. Word has length 28 [2022-11-23 13:52:15,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:52:15,997 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 44 transitions. [2022-11-23 13:52:15,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-23 13:52:15,998 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 44 transitions. [2022-11-23 13:52:15,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-23 13:52:15,999 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:52:15,999 INFO L195 NwaCegarLoop]: trace histogram [6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:52:16,004 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196c3a27-02e2-4921-8d55-2303b4c2668b/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-23 13:52:16,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196c3a27-02e2-4921-8d55-2303b4c2668b/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:52:16,211 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:52:16,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:52:16,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1810277145, now seen corresponding path program 1 times [2022-11-23 13:52:16,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:52:16,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590178524] [2022-11-23 13:52:16,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:52:16,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:52:16,231 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 13:52:16,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1385437834] [2022-11-23 13:52:16,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:52:16,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:52:16,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196c3a27-02e2-4921-8d55-2303b4c2668b/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:52:16,235 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196c3a27-02e2-4921-8d55-2303b4c2668b/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 13:52:16,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196c3a27-02e2-4921-8d55-2303b4c2668b/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 13:52:16,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:52:16,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-23 13:52:16,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:52:16,571 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-23 13:52:16,571 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 13:52:16,719 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-23 13:52:16,719 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:52:16,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590178524] [2022-11-23 13:52:16,719 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 13:52:16,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385437834] [2022-11-23 13:52:16,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1385437834] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-23 13:52:16,720 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 13:52:16,720 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 14 [2022-11-23 13:52:16,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713601286] [2022-11-23 13:52:16,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:52:16,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 13:52:16,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:52:16,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 13:52:16,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-11-23 13:52:16,722 INFO L87 Difference]: Start difference. First operand 34 states and 44 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-23 13:52:16,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:52:16,801 INFO L93 Difference]: Finished difference Result 47 states and 61 transitions. [2022-11-23 13:52:16,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 13:52:16,802 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 33 [2022-11-23 13:52:16,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:52:16,803 INFO L225 Difference]: With dead ends: 47 [2022-11-23 13:52:16,803 INFO L226 Difference]: Without dead ends: 45 [2022-11-23 13:52:16,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2022-11-23 13:52:16,811 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 6 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 13:52:16,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 122 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 13:52:16,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-11-23 13:52:16,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 44. [2022-11-23 13:52:16,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 23 states have (on average 1.173913043478261) internal successors, (27), 24 states have internal predecessors, (27), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-23 13:52:16,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 58 transitions. [2022-11-23 13:52:16,848 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 58 transitions. Word has length 33 [2022-11-23 13:52:16,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:52:16,849 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 58 transitions. [2022-11-23 13:52:16,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-23 13:52:16,849 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 58 transitions. [2022-11-23 13:52:16,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-23 13:52:16,853 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:52:16,853 INFO L195 NwaCegarLoop]: trace histogram [6, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:52:16,867 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196c3a27-02e2-4921-8d55-2303b4c2668b/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-23 13:52:17,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196c3a27-02e2-4921-8d55-2303b4c2668b/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:52:17,060 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:52:17,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:52:17,061 INFO L85 PathProgramCache]: Analyzing trace with hash -1313498982, now seen corresponding path program 1 times [2022-11-23 13:52:17,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:52:17,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993746017] [2022-11-23 13:52:17,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:52:17,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:52:17,090 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 13:52:17,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1566222574] [2022-11-23 13:52:17,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:52:17,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:52:17,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196c3a27-02e2-4921-8d55-2303b4c2668b/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:52:17,097 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196c3a27-02e2-4921-8d55-2303b4c2668b/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 13:52:17,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196c3a27-02e2-4921-8d55-2303b4c2668b/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-23 13:52:17,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:52:17,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-23 13:52:17,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:52:17,532 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-23 13:52:17,532 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 13:52:17,714 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-23 13:52:17,714 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:52:17,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993746017] [2022-11-23 13:52:17,715 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 13:52:17,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1566222574] [2022-11-23 13:52:17,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1566222574] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-23 13:52:17,715 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 13:52:17,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [12] total 15 [2022-11-23 13:52:17,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599096376] [2022-11-23 13:52:17,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:52:17,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 13:52:17,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:52:17,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 13:52:17,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2022-11-23 13:52:17,717 INFO L87 Difference]: Start difference. First operand 44 states and 58 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-23 13:52:17,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:52:17,843 INFO L93 Difference]: Finished difference Result 51 states and 64 transitions. [2022-11-23 13:52:17,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 13:52:17,844 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 38 [2022-11-23 13:52:17,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:52:17,844 INFO L225 Difference]: With dead ends: 51 [2022-11-23 13:52:17,845 INFO L226 Difference]: Without dead ends: 49 [2022-11-23 13:52:17,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2022-11-23 13:52:17,846 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 9 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 13:52:17,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 128 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 13:52:17,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-11-23 13:52:17,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 48. [2022-11-23 13:52:17,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 27 states have internal predecessors, (30), 16 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-23 13:52:17,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 61 transitions. [2022-11-23 13:52:17,870 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 61 transitions. Word has length 38 [2022-11-23 13:52:17,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:52:17,870 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 61 transitions. [2022-11-23 13:52:17,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-23 13:52:17,871 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 61 transitions. [2022-11-23 13:52:17,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-23 13:52:17,872 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:52:17,872 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:52:17,882 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196c3a27-02e2-4921-8d55-2303b4c2668b/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-23 13:52:18,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196c3a27-02e2-4921-8d55-2303b4c2668b/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:52:18,077 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:52:18,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:52:18,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1793667961, now seen corresponding path program 1 times [2022-11-23 13:52:18,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:52:18,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427408840] [2022-11-23 13:52:18,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:52:18,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:52:18,110 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 13:52:18,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1956917790] [2022-11-23 13:52:18,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:52:18,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:52:18,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196c3a27-02e2-4921-8d55-2303b4c2668b/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:52:18,114 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196c3a27-02e2-4921-8d55-2303b4c2668b/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 13:52:18,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196c3a27-02e2-4921-8d55-2303b4c2668b/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-23 13:52:18,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:52:18,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-23 13:52:18,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:52:18,479 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-23 13:52:18,479 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 13:52:18,587 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:52:18,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427408840] [2022-11-23 13:52:18,587 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 13:52:18,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956917790] [2022-11-23 13:52:18,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1956917790] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 13:52:18,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1144455741] [2022-11-23 13:52:18,590 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2022-11-23 13:52:18,591 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 13:52:18,591 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 13:52:18,591 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 13:52:18,592 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 13:52:19,753 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 38 for LOIs [2022-11-23 13:52:19,762 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 58 for LOIs [2022-11-23 13:52:19,778 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 13:52:21,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1144455741] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:52:21,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 13:52:21,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [10] total 22 [2022-11-23 13:52:21,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261562551] [2022-11-23 13:52:21,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:52:21,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-23 13:52:21,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:52:21,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-23 13:52:21,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=483, Unknown=0, NotChecked=0, Total=600 [2022-11-23 13:52:21,762 INFO L87 Difference]: Start difference. First operand 48 states and 61 transitions. Second operand has 14 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 7 states have internal predecessors, (12), 6 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2022-11-23 13:52:22,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:52:22,150 INFO L93 Difference]: Finished difference Result 73 states and 87 transitions. [2022-11-23 13:52:22,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-23 13:52:22,151 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 7 states have internal predecessors, (12), 6 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) Word has length 43 [2022-11-23 13:52:22,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:52:22,152 INFO L225 Difference]: With dead ends: 73 [2022-11-23 13:52:22,152 INFO L226 Difference]: Without dead ends: 71 [2022-11-23 13:52:22,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 54 SyntacticMatches, 13 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=117, Invalid=483, Unknown=0, NotChecked=0, Total=600 [2022-11-23 13:52:22,153 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 42 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 13:52:22,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 50 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 13:52:22,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-11-23 13:52:22,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 69. [2022-11-23 13:52:22,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 39 states have (on average 1.1025641025641026) internal successors, (43), 41 states have internal predecessors, (43), 20 states have call successors, (20), 9 states have call predecessors, (20), 9 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2022-11-23 13:52:22,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 82 transitions. [2022-11-23 13:52:22,179 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 82 transitions. Word has length 43 [2022-11-23 13:52:22,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:52:22,180 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 82 transitions. [2022-11-23 13:52:22,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 7 states have internal predecessors, (12), 6 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2022-11-23 13:52:22,180 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 82 transitions. [2022-11-23 13:52:22,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-23 13:52:22,181 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:52:22,181 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:52:22,191 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196c3a27-02e2-4921-8d55-2303b4c2668b/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-23 13:52:22,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196c3a27-02e2-4921-8d55-2303b4c2668b/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-23 13:52:22,389 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:52:22,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:52:22,389 INFO L85 PathProgramCache]: Analyzing trace with hash 434944611, now seen corresponding path program 1 times [2022-11-23 13:52:22,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:52:22,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558408895] [2022-11-23 13:52:22,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:52:22,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:52:22,404 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 13:52:22,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1773545529] [2022-11-23 13:52:22,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:52:22,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:52:22,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196c3a27-02e2-4921-8d55-2303b4c2668b/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:52:22,412 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196c3a27-02e2-4921-8d55-2303b4c2668b/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 13:52:22,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196c3a27-02e2-4921-8d55-2303b4c2668b/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-23 13:52:22,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:52:22,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-23 13:52:22,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:52:22,526 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-11-23 13:52:22,526 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 13:52:22,627 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-11-23 13:52:22,628 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:52:22,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558408895] [2022-11-23 13:52:22,628 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 13:52:22,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1773545529] [2022-11-23 13:52:22,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1773545529] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 13:52:22,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [551345908] [2022-11-23 13:52:22,631 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2022-11-23 13:52:22,631 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 13:52:22,631 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 13:52:22,632 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 13:52:22,632 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 13:52:35,114 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 8 for LOIs [2022-11-23 13:52:35,118 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 58 for LOIs [2022-11-23 13:52:35,132 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 13:52:38,568 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2210#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-23 13:52:38,568 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 13:52:38,568 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 13:52:38,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2022-11-23 13:52:38,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102790063] [2022-11-23 13:52:38,568 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 13:52:38,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 13:52:38,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:52:38,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 13:52:38,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=394, Unknown=0, NotChecked=0, Total=506 [2022-11-23 13:52:38,570 INFO L87 Difference]: Start difference. First operand 69 states and 82 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 5 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2022-11-23 13:52:38,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:52:38,859 INFO L93 Difference]: Finished difference Result 111 states and 148 transitions. [2022-11-23 13:52:38,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 13:52:38,860 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 5 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 52 [2022-11-23 13:52:38,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:52:38,865 INFO L225 Difference]: With dead ends: 111 [2022-11-23 13:52:38,865 INFO L226 Difference]: Without dead ends: 103 [2022-11-23 13:52:38,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 123 SyntacticMatches, 10 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=147, Invalid=555, Unknown=0, NotChecked=0, Total=702 [2022-11-23 13:52:38,866 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 34 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 13:52:38,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 177 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 13:52:38,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-11-23 13:52:38,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 94. [2022-11-23 13:52:38,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 52 states have (on average 1.1730769230769231) internal successors, (61), 53 states have internal predecessors, (61), 32 states have call successors, (32), 9 states have call predecessors, (32), 9 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2022-11-23 13:52:38,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 124 transitions. [2022-11-23 13:52:38,909 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 124 transitions. Word has length 52 [2022-11-23 13:52:38,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:52:38,910 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 124 transitions. [2022-11-23 13:52:38,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 5 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2022-11-23 13:52:38,910 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 124 transitions. [2022-11-23 13:52:38,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-23 13:52:38,913 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:52:38,913 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:52:38,934 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196c3a27-02e2-4921-8d55-2303b4c2668b/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-23 13:52:39,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196c3a27-02e2-4921-8d55-2303b4c2668b/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:52:39,119 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:52:39,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:52:39,120 INFO L85 PathProgramCache]: Analyzing trace with hash -243308457, now seen corresponding path program 1 times [2022-11-23 13:52:39,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:52:39,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321154212] [2022-11-23 13:52:39,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:52:39,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:52:39,131 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 13:52:39,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [180162057] [2022-11-23 13:52:39,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:52:39,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:52:39,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196c3a27-02e2-4921-8d55-2303b4c2668b/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:52:39,133 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196c3a27-02e2-4921-8d55-2303b4c2668b/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 13:52:39,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196c3a27-02e2-4921-8d55-2303b4c2668b/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-23 13:52:39,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:52:39,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-23 13:52:39,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:52:39,343 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 23 proven. 10 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-11-23 13:52:39,344 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 13:52:39,508 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 20 proven. 7 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-23 13:52:39,508 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:52:39,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321154212] [2022-11-23 13:52:39,508 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 13:52:39,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180162057] [2022-11-23 13:52:39,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [180162057] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 13:52:39,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [813830408] [2022-11-23 13:52:39,514 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2022-11-23 13:52:39,514 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 13:52:39,515 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 13:52:39,515 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 13:52:39,516 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 13:52:49,647 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 38 for LOIs [2022-11-23 13:52:49,654 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 58 for LOIs [2022-11-23 13:52:49,667 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 13:52:53,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [813830408] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:52:53,844 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-23 13:52:53,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [9, 7] total 27 [2022-11-23 13:52:53,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534726194] [2022-11-23 13:52:53,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:52:53,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-23 13:52:53,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:52:53,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-23 13:52:53,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=573, Unknown=0, NotChecked=0, Total=702 [2022-11-23 13:52:53,846 INFO L87 Difference]: Start difference. First operand 94 states and 124 transitions. Second operand has 16 states, 10 states have (on average 1.4) internal successors, (14), 9 states have internal predecessors, (14), 6 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 7 states have call predecessors, (10), 6 states have call successors, (10) [2022-11-23 13:52:54,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:52:54,758 INFO L93 Difference]: Finished difference Result 113 states and 146 transitions. [2022-11-23 13:52:54,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-23 13:52:54,758 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 10 states have (on average 1.4) internal successors, (14), 9 states have internal predecessors, (14), 6 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 7 states have call predecessors, (10), 6 states have call successors, (10) Word has length 58 [2022-11-23 13:52:54,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:52:54,760 INFO L225 Difference]: With dead ends: 113 [2022-11-23 13:52:54,760 INFO L226 Difference]: Without dead ends: 111 [2022-11-23 13:52:54,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 129 SyntacticMatches, 18 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 423 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=142, Invalid=614, Unknown=0, NotChecked=0, Total=756 [2022-11-23 13:52:54,761 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 32 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-23 13:52:54,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 62 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-23 13:52:54,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2022-11-23 13:52:54,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2022-11-23 13:52:54,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 63 states have (on average 1.1587301587301588) internal successors, (73), 64 states have internal predecessors, (73), 36 states have call successors, (36), 11 states have call predecessors, (36), 11 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2022-11-23 13:52:54,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 144 transitions. [2022-11-23 13:52:54,801 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 144 transitions. Word has length 58 [2022-11-23 13:52:54,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:52:54,804 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 144 transitions. [2022-11-23 13:52:54,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 10 states have (on average 1.4) internal successors, (14), 9 states have internal predecessors, (14), 6 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 7 states have call predecessors, (10), 6 states have call successors, (10) [2022-11-23 13:52:54,805 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 144 transitions. [2022-11-23 13:52:54,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-23 13:52:54,807 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:52:54,808 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 6, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:52:54,822 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196c3a27-02e2-4921-8d55-2303b4c2668b/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-23 13:52:55,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196c3a27-02e2-4921-8d55-2303b4c2668b/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:52:55,009 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:52:55,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:52:55,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1984692712, now seen corresponding path program 1 times [2022-11-23 13:52:55,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:52:55,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144189988] [2022-11-23 13:52:55,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:52:55,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:52:55,026 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 13:52:55,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [123654904] [2022-11-23 13:52:55,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:52:55,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:52:55,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196c3a27-02e2-4921-8d55-2303b4c2668b/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:52:55,028 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196c3a27-02e2-4921-8d55-2303b4c2668b/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 13:52:55,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196c3a27-02e2-4921-8d55-2303b4c2668b/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-23 13:52:55,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:52:55,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-23 13:52:55,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:52:55,216 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 27 proven. 10 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-11-23 13:52:55,216 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 13:52:55,333 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 27 proven. 10 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-11-23 13:52:55,333 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:52:55,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144189988] [2022-11-23 13:52:55,334 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 13:52:55,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [123654904] [2022-11-23 13:52:55,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [123654904] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 13:52:55,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [458445707] [2022-11-23 13:52:55,336 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2022-11-23 13:52:55,336 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 13:52:55,337 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 13:52:55,337 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 13:52:55,337 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 13:53:00,329 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 39 for LOIs [2022-11-23 13:53:00,380 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 58 for LOIs [2022-11-23 13:53:00,394 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 13:53:05,349 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3657#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-23 13:53:05,349 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 13:53:05,349 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 13:53:05,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 9 [2022-11-23 13:53:05,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022085910] [2022-11-23 13:53:05,350 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 13:53:05,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-23 13:53:05,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:53:05,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-23 13:53:05,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=579, Unknown=0, NotChecked=0, Total=702 [2022-11-23 13:53:05,352 INFO L87 Difference]: Start difference. First operand 111 states and 144 transitions. Second operand has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 2 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 13:53:05,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:53:05,682 INFO L93 Difference]: Finished difference Result 122 states and 158 transitions. [2022-11-23 13:53:05,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 13:53:05,683 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 2 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 65 [2022-11-23 13:53:05,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:53:05,690 INFO L225 Difference]: With dead ends: 122 [2022-11-23 13:53:05,691 INFO L226 Difference]: Without dead ends: 120 [2022-11-23 13:53:05,691 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 157 SyntacticMatches, 11 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 432 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=139, Invalid=673, Unknown=0, NotChecked=0, Total=812 [2022-11-23 13:53:05,694 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 14 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 13:53:05,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 103 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 13:53:05,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2022-11-23 13:53:05,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2022-11-23 13:53:05,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 67 states have (on average 1.1492537313432836) internal successors, (77), 69 states have internal predecessors, (77), 40 states have call successors, (40), 12 states have call predecessors, (40), 12 states have return successors, (39), 38 states have call predecessors, (39), 39 states have call successors, (39) [2022-11-23 13:53:05,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 156 transitions. [2022-11-23 13:53:05,743 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 156 transitions. Word has length 65 [2022-11-23 13:53:05,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:53:05,744 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 156 transitions. [2022-11-23 13:53:05,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 2 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 13:53:05,744 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 156 transitions. [2022-11-23 13:53:05,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-23 13:53:05,745 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:53:05,745 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:53:05,751 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196c3a27-02e2-4921-8d55-2303b4c2668b/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-23 13:53:05,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196c3a27-02e2-4921-8d55-2303b4c2668b/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:53:05,951 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:53:05,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:53:05,952 INFO L85 PathProgramCache]: Analyzing trace with hash -2003369438, now seen corresponding path program 1 times [2022-11-23 13:53:05,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:53:05,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013910907] [2022-11-23 13:53:05,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:53:05,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:53:05,962 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 13:53:05,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [281389624] [2022-11-23 13:53:05,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:53:05,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:53:05,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196c3a27-02e2-4921-8d55-2303b4c2668b/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:53:05,970 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196c3a27-02e2-4921-8d55-2303b4c2668b/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 13:53:05,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196c3a27-02e2-4921-8d55-2303b4c2668b/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-23 13:53:06,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:53:06,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 50 conjunts are in the unsatisfiable core [2022-11-23 13:53:06,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:53:06,722 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 18 proven. 14 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2022-11-23 13:53:06,722 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 13:53:07,371 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 16 proven. 8 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2022-11-23 13:53:07,372 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:53:07,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013910907] [2022-11-23 13:53:07,372 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 13:53:07,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [281389624] [2022-11-23 13:53:07,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [281389624] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 13:53:07,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1948853409] [2022-11-23 13:53:07,375 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2022-11-23 13:53:07,375 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 13:53:07,375 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 13:53:07,376 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 13:53:07,376 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 13:53:11,554 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 8 for LOIs [2022-11-23 13:53:11,558 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 58 for LOIs [2022-11-23 13:53:11,571 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 13:53:37,544 WARN L233 SmtUtils]: Spent 19.25s on a formula simplification. DAG size of input: 83 DAG size of output: 76 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:53:53,230 WARN L233 SmtUtils]: Spent 13.85s on a formula simplification. DAG size of input: 85 DAG size of output: 76 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:53:53,588 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4510#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-23 13:53:53,588 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 13:53:53,588 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 13:53:53,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 21 [2022-11-23 13:53:53,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004853384] [2022-11-23 13:53:53,588 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 13:53:53,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-23 13:53:53,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:53:53,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-23 13:53:53,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=1434, Unknown=0, NotChecked=0, Total=1640 [2022-11-23 13:53:53,592 INFO L87 Difference]: Start difference. First operand 120 states and 156 transitions. Second operand has 21 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 17 states have internal predecessors, (32), 11 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (27), 9 states have call predecessors, (27), 9 states have call successors, (27) [2022-11-23 13:54:06,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:54:06,883 INFO L93 Difference]: Finished difference Result 199 states and 279 transitions. [2022-11-23 13:54:06,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-23 13:54:06,884 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 17 states have internal predecessors, (32), 11 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (27), 9 states have call predecessors, (27), 9 states have call successors, (27) Word has length 74 [2022-11-23 13:54:06,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:54:06,886 INFO L225 Difference]: With dead ends: 199 [2022-11-23 13:54:06,886 INFO L226 Difference]: Without dead ends: 197 [2022-11-23 13:54:06,887 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 169 SyntacticMatches, 12 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1505 ImplicationChecksByTransitivity, 49.3s TimeCoverageRelationStatistics Valid=490, Invalid=3292, Unknown=0, NotChecked=0, Total=3782 [2022-11-23 13:54:06,888 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 126 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 852 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 1076 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 852 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-11-23 13:54:06,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 325 Invalid, 1076 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 852 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2022-11-23 13:54:06,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2022-11-23 13:54:06,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 187. [2022-11-23 13:54:06,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 99 states have (on average 1.2222222222222223) internal successors, (121), 101 states have internal predecessors, (121), 73 states have call successors, (73), 14 states have call predecessors, (73), 14 states have return successors, (72), 71 states have call predecessors, (72), 72 states have call successors, (72) [2022-11-23 13:54:06,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 266 transitions. [2022-11-23 13:54:06,991 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 266 transitions. Word has length 74 [2022-11-23 13:54:06,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:54:06,991 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 266 transitions. [2022-11-23 13:54:06,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 17 states have internal predecessors, (32), 11 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (27), 9 states have call predecessors, (27), 9 states have call successors, (27) [2022-11-23 13:54:06,992 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 266 transitions. [2022-11-23 13:54:06,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-23 13:54:06,993 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:54:06,993 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:54:07,004 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196c3a27-02e2-4921-8d55-2303b4c2668b/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-23 13:54:07,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196c3a27-02e2-4921-8d55-2303b4c2668b/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-23 13:54:07,200 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:54:07,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:54:07,200 INFO L85 PathProgramCache]: Analyzing trace with hash -134461569, now seen corresponding path program 1 times [2022-11-23 13:54:07,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:54:07,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594751893] [2022-11-23 13:54:07,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:54:07,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:54:07,211 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 13:54:07,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1502017572] [2022-11-23 13:54:07,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:54:07,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:54:07,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196c3a27-02e2-4921-8d55-2303b4c2668b/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:54:07,213 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196c3a27-02e2-4921-8d55-2303b4c2668b/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 13:54:07,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196c3a27-02e2-4921-8d55-2303b4c2668b/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-23 13:54:07,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:54:07,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-23 13:54:07,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:54:07,704 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 39 proven. 16 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-11-23 13:54:07,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 13:54:07,941 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 39 proven. 7 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2022-11-23 13:54:07,942 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:54:07,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594751893] [2022-11-23 13:54:07,942 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 13:54:07,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1502017572] [2022-11-23 13:54:07,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1502017572] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 13:54:07,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [39507620] [2022-11-23 13:54:07,944 INFO L159 IcfgInterpreter]: Started Sifa with 28 locations of interest [2022-11-23 13:54:07,944 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 13:54:07,945 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 13:54:07,945 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 13:54:07,945 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 13:54:12,297 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 8 for LOIs [2022-11-23 13:54:12,300 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 58 for LOIs [2022-11-23 13:54:12,313 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 13:54:23,296 WARN L233 SmtUtils]: Spent 6.91s on a formula simplification. DAG size of input: 83 DAG size of output: 76 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:54:39,848 WARN L233 SmtUtils]: Spent 15.59s on a formula simplification. DAG size of input: 85 DAG size of output: 76 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:54:40,742 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5671#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-23 13:54:40,742 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 13:54:40,742 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 13:54:40,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8] total 19 [2022-11-23 13:54:40,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342793255] [2022-11-23 13:54:40,743 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 13:54:40,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-23 13:54:40,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:54:40,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-23 13:54:40,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=1367, Unknown=0, NotChecked=0, Total=1560 [2022-11-23 13:54:40,744 INFO L87 Difference]: Start difference. First operand 187 states and 266 transitions. Second operand has 19 states, 18 states have (on average 2.0) internal successors, (36), 15 states have internal predecessors, (36), 9 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (26), 9 states have call predecessors, (26), 9 states have call successors, (26) [2022-11-23 13:54:45,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:54:45,227 INFO L93 Difference]: Finished difference Result 231 states and 326 transitions. [2022-11-23 13:54:45,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-23 13:54:45,228 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.0) internal successors, (36), 15 states have internal predecessors, (36), 9 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (26), 9 states have call predecessors, (26), 9 states have call successors, (26) Word has length 79 [2022-11-23 13:54:45,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:54:45,229 INFO L225 Difference]: With dead ends: 231 [2022-11-23 13:54:45,230 INFO L226 Difference]: Without dead ends: 225 [2022-11-23 13:54:45,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 199 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 869 ImplicationChecksByTransitivity, 31.3s TimeCoverageRelationStatistics Valid=329, Invalid=2323, Unknown=0, NotChecked=0, Total=2652 [2022-11-23 13:54:45,232 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 63 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 619 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-23 13:54:45,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 159 Invalid, 708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 619 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-23 13:54:45,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2022-11-23 13:54:45,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 197. [2022-11-23 13:54:45,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 108 states have (on average 1.1759259259259258) internal successors, (127), 109 states have internal predecessors, (127), 71 states have call successors, (71), 17 states have call predecessors, (71), 17 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2022-11-23 13:54:45,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 268 transitions. [2022-11-23 13:54:45,325 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 268 transitions. Word has length 79 [2022-11-23 13:54:45,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:54:45,326 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 268 transitions. [2022-11-23 13:54:45,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.0) internal successors, (36), 15 states have internal predecessors, (36), 9 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (26), 9 states have call predecessors, (26), 9 states have call successors, (26) [2022-11-23 13:54:45,326 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 268 transitions. [2022-11-23 13:54:45,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-23 13:54:45,327 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:54:45,328 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 6, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:54:45,333 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196c3a27-02e2-4921-8d55-2303b4c2668b/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-23 13:54:45,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196c3a27-02e2-4921-8d55-2303b4c2668b/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:54:45,534 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:54:45,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:54:45,534 INFO L85 PathProgramCache]: Analyzing trace with hash 145896886, now seen corresponding path program 1 times [2022-11-23 13:54:45,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:54:45,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672625926] [2022-11-23 13:54:45,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:54:45,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:54:45,545 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 13:54:45,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [499584842] [2022-11-23 13:54:45,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:54:45,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:54:45,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196c3a27-02e2-4921-8d55-2303b4c2668b/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:54:45,547 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196c3a27-02e2-4921-8d55-2303b4c2668b/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 13:54:45,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196c3a27-02e2-4921-8d55-2303b4c2668b/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-23 13:54:45,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:54:45,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-23 13:54:45,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:54:45,726 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 122 proven. 13 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2022-11-23 13:54:45,726 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 13:54:45,891 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 32 proven. 13 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2022-11-23 13:54:45,892 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:54:45,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672625926] [2022-11-23 13:54:45,892 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 13:54:45,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499584842] [2022-11-23 13:54:45,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [499584842] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 13:54:45,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [815177295] [2022-11-23 13:54:45,894 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2022-11-23 13:54:45,895 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 13:54:45,895 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 13:54:45,895 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 13:54:45,895 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 13:54:48,731 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 35 for LOIs [2022-11-23 13:54:48,772 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 58 for LOIs [2022-11-23 13:54:48,783 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 13:55:12,337 WARN L233 SmtUtils]: Spent 21.34s on a formula simplification. DAG size of input: 177 DAG size of output: 144 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:55:29,623 WARN L233 SmtUtils]: Spent 14.94s on a formula simplification that was a NOOP. DAG size: 71 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:55:48,336 WARN L233 SmtUtils]: Spent 17.70s on a formula simplification that was a NOOP. DAG size: 73 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:55:48,435 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6941#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-23 13:55:48,436 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 13:55:48,436 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 13:55:48,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2022-11-23 13:55:48,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416612389] [2022-11-23 13:55:48,436 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 13:55:48,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-23 13:55:48,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:55:48,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-23 13:55:48,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=780, Unknown=0, NotChecked=0, Total=930 [2022-11-23 13:55:48,438 INFO L87 Difference]: Start difference. First operand 197 states and 268 transitions. Second operand has 11 states, 10 states have (on average 2.8) internal successors, (28), 11 states have internal predecessors, (28), 8 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (28), 7 states have call predecessors, (28), 8 states have call successors, (28) [2022-11-23 13:55:48,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:55:48,991 INFO L93 Difference]: Finished difference Result 248 states and 331 transitions. [2022-11-23 13:55:48,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-23 13:55:48,992 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.8) internal successors, (28), 11 states have internal predecessors, (28), 8 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (28), 7 states have call predecessors, (28), 8 states have call successors, (28) Word has length 90 [2022-11-23 13:55:48,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:55:48,994 INFO L225 Difference]: With dead ends: 248 [2022-11-23 13:55:48,994 INFO L226 Difference]: Without dead ends: 173 [2022-11-23 13:55:48,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 223 SyntacticMatches, 16 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 782 ImplicationChecksByTransitivity, 59.9s TimeCoverageRelationStatistics Valid=268, Invalid=1454, Unknown=0, NotChecked=0, Total=1722 [2022-11-23 13:55:48,996 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 65 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 13:55:48,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 215 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 13:55:48,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2022-11-23 13:55:49,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 168. [2022-11-23 13:55:49,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 93 states have (on average 1.1505376344086022) internal successors, (107), 94 states have internal predecessors, (107), 59 states have call successors, (59), 15 states have call predecessors, (59), 15 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2022-11-23 13:55:49,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 224 transitions. [2022-11-23 13:55:49,083 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 224 transitions. Word has length 90 [2022-11-23 13:55:49,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:55:49,083 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 224 transitions. [2022-11-23 13:55:49,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.8) internal successors, (28), 11 states have internal predecessors, (28), 8 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (28), 7 states have call predecessors, (28), 8 states have call successors, (28) [2022-11-23 13:55:49,084 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 224 transitions. [2022-11-23 13:55:49,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-23 13:55:49,084 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:55:49,085 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 14, 6, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:55:49,090 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196c3a27-02e2-4921-8d55-2303b4c2668b/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-23 13:55:49,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196c3a27-02e2-4921-8d55-2303b4c2668b/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:55:49,285 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:55:49,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:55:49,286 INFO L85 PathProgramCache]: Analyzing trace with hash -743497349, now seen corresponding path program 2 times [2022-11-23 13:55:49,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:55:49,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576414772] [2022-11-23 13:55:49,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:55:49,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:55:49,297 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 13:55:49,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1781933867] [2022-11-23 13:55:49,297 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 13:55:49,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:55:49,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196c3a27-02e2-4921-8d55-2303b4c2668b/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:55:49,303 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196c3a27-02e2-4921-8d55-2303b4c2668b/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 13:55:49,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196c3a27-02e2-4921-8d55-2303b4c2668b/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-23 13:55:49,393 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-23 13:55:49,393 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 13:55:49,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-23 13:55:49,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:55:49,531 INFO L134 CoverageAnalysis]: Checked inductivity of 459 backedges. 152 proven. 10 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2022-11-23 13:55:49,531 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 13:55:49,683 INFO L134 CoverageAnalysis]: Checked inductivity of 459 backedges. 46 proven. 24 refuted. 0 times theorem prover too weak. 389 trivial. 0 not checked. [2022-11-23 13:55:49,683 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:55:49,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576414772] [2022-11-23 13:55:49,684 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 13:55:49,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781933867] [2022-11-23 13:55:49,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1781933867] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 13:55:49,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1515273705] [2022-11-23 13:55:49,686 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2022-11-23 13:55:49,686 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 13:55:49,687 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 13:55:49,687 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 13:55:49,687 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 13:55:53,625 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 8 for LOIs [2022-11-23 13:55:53,628 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 58 for LOIs [2022-11-23 13:55:53,641 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 13:56:10,340 WARN L233 SmtUtils]: Spent 11.91s on a formula simplification. DAG size of input: 83 DAG size of output: 76 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:56:19,034 WARN L233 SmtUtils]: Spent 7.55s on a formula simplification. DAG size of input: 85 DAG size of output: 76 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:56:19,302 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8297#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-23 13:56:19,302 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 13:56:19,303 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 13:56:19,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2022-11-23 13:56:19,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581225965] [2022-11-23 13:56:19,303 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 13:56:19,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-23 13:56:19,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:56:19,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-23 13:56:19,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=911, Unknown=0, NotChecked=0, Total=1056 [2022-11-23 13:56:19,305 INFO L87 Difference]: Start difference. First operand 168 states and 224 transitions. Second operand has 14 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 12 states have internal predecessors, (37), 9 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (33), 9 states have call predecessors, (33), 9 states have call successors, (33) [2022-11-23 13:56:19,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:56:19,856 INFO L93 Difference]: Finished difference Result 257 states and 344 transitions. [2022-11-23 13:56:19,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-23 13:56:19,856 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 12 states have internal predecessors, (37), 9 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (33), 9 states have call predecessors, (33), 9 states have call successors, (33) Word has length 110 [2022-11-23 13:56:19,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:56:19,857 INFO L225 Difference]: With dead ends: 257 [2022-11-23 13:56:19,857 INFO L226 Difference]: Without dead ends: 160 [2022-11-23 13:56:19,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 276 SyntacticMatches, 21 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1079 ImplicationChecksByTransitivity, 25.9s TimeCoverageRelationStatistics Valid=253, Invalid=1553, Unknown=0, NotChecked=0, Total=1806 [2022-11-23 13:56:19,859 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 30 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 13:56:19,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 193 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 13:56:19,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2022-11-23 13:56:19,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 134. [2022-11-23 13:56:19,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 75 states have (on average 1.08) internal successors, (81), 77 states have internal predecessors, (81), 43 states have call successors, (43), 15 states have call predecessors, (43), 15 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) [2022-11-23 13:56:19,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 166 transitions. [2022-11-23 13:56:19,918 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 166 transitions. Word has length 110 [2022-11-23 13:56:19,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:56:19,918 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 166 transitions. [2022-11-23 13:56:19,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 12 states have internal predecessors, (37), 9 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (33), 9 states have call predecessors, (33), 9 states have call successors, (33) [2022-11-23 13:56:19,918 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 166 transitions. [2022-11-23 13:56:19,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-11-23 13:56:19,920 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:56:19,920 INFO L195 NwaCegarLoop]: trace histogram [17, 16, 16, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:56:19,925 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196c3a27-02e2-4921-8d55-2303b4c2668b/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-23 13:56:20,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196c3a27-02e2-4921-8d55-2303b4c2668b/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-23 13:56:20,121 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:56:20,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:56:20,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1538893617, now seen corresponding path program 2 times [2022-11-23 13:56:20,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:56:20,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931176377] [2022-11-23 13:56:20,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:56:20,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:56:20,131 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 13:56:20,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1643186340] [2022-11-23 13:56:20,131 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 13:56:20,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:56:20,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196c3a27-02e2-4921-8d55-2303b4c2668b/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:56:20,133 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196c3a27-02e2-4921-8d55-2303b4c2668b/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 13:56:20,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196c3a27-02e2-4921-8d55-2303b4c2668b/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-23 13:56:20,222 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-23 13:56:20,222 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 13:56:20,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 72 conjunts are in the unsatisfiable core [2022-11-23 13:56:20,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:56:21,229 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 37 proven. 46 refuted. 0 times theorem prover too weak. 502 trivial. 0 not checked. [2022-11-23 13:56:21,230 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 13:56:25,687 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 32 proven. 43 refuted. 0 times theorem prover too weak. 510 trivial. 0 not checked. [2022-11-23 13:56:25,687 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:56:25,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931176377] [2022-11-23 13:56:25,687 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 13:56:25,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1643186340] [2022-11-23 13:56:25,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1643186340] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 13:56:25,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1959806885] [2022-11-23 13:56:25,690 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2022-11-23 13:56:25,690 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 13:56:25,690 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 13:56:25,690 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 13:56:25,690 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 13:56:28,948 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 39 for LOIs [2022-11-23 13:56:28,994 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 58 for LOIs [2022-11-23 13:56:29,007 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 13:57:00,725 WARN L233 SmtUtils]: Spent 27.64s on a formula simplification. DAG size of input: 179 DAG size of output: 146 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:57:12,297 WARN L233 SmtUtils]: Spent 6.04s on a formula simplification that was a NOOP. DAG size: 75 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:57:25,598 WARN L233 SmtUtils]: Spent 12.56s on a formula simplification. DAG size of input: 77 DAG size of output: 75 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:57:47,665 WARN L233 SmtUtils]: Spent 15.24s on a formula simplification. DAG size of input: 177 DAG size of output: 87 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:57:47,828 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9687#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-23 13:57:47,828 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 13:57:47,828 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 13:57:47,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 26 [2022-11-23 13:57:47,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742806098] [2022-11-23 13:57:47,829 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 13:57:47,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-23 13:57:47,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:57:47,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-23 13:57:47,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=264, Invalid=1806, Unknown=0, NotChecked=0, Total=2070 [2022-11-23 13:57:47,831 INFO L87 Difference]: Start difference. First operand 134 states and 166 transitions. Second operand has 26 states, 23 states have (on average 2.0) internal successors, (46), 23 states have internal predecessors, (46), 14 states have call successors, (44), 3 states have call predecessors, (44), 2 states have return successors, (43), 12 states have call predecessors, (43), 12 states have call successors, (43) [2022-11-23 13:58:02,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:58:02,047 INFO L93 Difference]: Finished difference Result 266 states and 355 transitions. [2022-11-23 13:58:02,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-23 13:58:02,047 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 23 states have (on average 2.0) internal successors, (46), 23 states have internal predecessors, (46), 14 states have call successors, (44), 3 states have call predecessors, (44), 2 states have return successors, (43), 12 states have call predecessors, (43), 12 states have call successors, (43) Word has length 121 [2022-11-23 13:58:02,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:58:02,048 INFO L225 Difference]: With dead ends: 266 [2022-11-23 13:58:02,048 INFO L226 Difference]: Without dead ends: 217 [2022-11-23 13:58:02,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 393 GetRequests, 299 SyntacticMatches, 18 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2641 ImplicationChecksByTransitivity, 86.1s TimeCoverageRelationStatistics Valid=841, Invalid=5165, Unknown=0, NotChecked=0, Total=6006 [2022-11-23 13:58:02,051 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 174 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 1128 mSolverCounterSat, 346 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 1474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 346 IncrementalHoareTripleChecker+Valid, 1128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2022-11-23 13:58:02,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 413 Invalid, 1474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [346 Valid, 1128 Invalid, 0 Unknown, 0 Unchecked, 9.0s Time] [2022-11-23 13:58:02,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2022-11-23 13:58:02,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 204. [2022-11-23 13:58:02,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 106 states have (on average 1.1037735849056605) internal successors, (117), 107 states have internal predecessors, (117), 79 states have call successors, (79), 18 states have call predecessors, (79), 18 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) [2022-11-23 13:58:02,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 274 transitions. [2022-11-23 13:58:02,192 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 274 transitions. Word has length 121 [2022-11-23 13:58:02,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:58:02,193 INFO L495 AbstractCegarLoop]: Abstraction has 204 states and 274 transitions. [2022-11-23 13:58:02,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 23 states have (on average 2.0) internal successors, (46), 23 states have internal predecessors, (46), 14 states have call successors, (44), 3 states have call predecessors, (44), 2 states have return successors, (43), 12 states have call predecessors, (43), 12 states have call successors, (43) [2022-11-23 13:58:02,193 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 274 transitions. [2022-11-23 13:58:02,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-23 13:58:02,195 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:58:02,195 INFO L195 NwaCegarLoop]: trace histogram [19, 18, 18, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:58:02,202 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196c3a27-02e2-4921-8d55-2303b4c2668b/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-23 13:58:02,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196c3a27-02e2-4921-8d55-2303b4c2668b/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:58:02,401 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:58:02,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:58:02,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1186822259, now seen corresponding path program 3 times [2022-11-23 13:58:02,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:58:02,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79991862] [2022-11-23 13:58:02,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:58:02,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:58:02,424 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 13:58:02,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1668807142] [2022-11-23 13:58:02,429 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 13:58:02,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:58:02,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196c3a27-02e2-4921-8d55-2303b4c2668b/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:58:02,431 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196c3a27-02e2-4921-8d55-2303b4c2668b/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 13:58:02,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196c3a27-02e2-4921-8d55-2303b4c2668b/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-23 13:58:02,520 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 13:58:02,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 13:58:02,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-23 13:58:02,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:58:02,635 INFO L134 CoverageAnalysis]: Checked inductivity of 732 backedges. 178 proven. 41 refuted. 0 times theorem prover too weak. 513 trivial. 0 not checked. [2022-11-23 13:58:02,635 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 13:58:02,849 INFO L134 CoverageAnalysis]: Checked inductivity of 732 backedges. 54 proven. 41 refuted. 0 times theorem prover too weak. 637 trivial. 0 not checked. [2022-11-23 13:58:02,850 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:58:02,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79991862] [2022-11-23 13:58:02,850 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 13:58:02,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1668807142] [2022-11-23 13:58:02,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1668807142] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 13:58:02,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1999492496] [2022-11-23 13:58:02,855 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2022-11-23 13:58:02,855 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 13:58:02,856 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 13:58:02,856 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 13:58:02,856 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 13:58:05,415 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 35 for LOIs [2022-11-23 13:58:05,451 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 58 for LOIs [2022-11-23 13:58:05,464 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 13:58:39,074 WARN L233 SmtUtils]: Spent 29.73s on a formula simplification. DAG size of input: 177 DAG size of output: 144 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:58:59,269 WARN L233 SmtUtils]: Spent 16.60s on a formula simplification that was a NOOP. DAG size: 71 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:59:19,142 WARN L233 SmtUtils]: Spent 18.39s on a formula simplification that was a NOOP. DAG size: 73 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:59:19,225 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '11293#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-23 13:59:19,225 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 13:59:19,225 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 13:59:19,225 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2022-11-23 13:59:19,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055287523] [2022-11-23 13:59:19,225 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 13:59:19,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-23 13:59:19,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:59:19,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-23 13:59:19,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=897, Unknown=0, NotChecked=0, Total=1056 [2022-11-23 13:59:19,227 INFO L87 Difference]: Start difference. First operand 204 states and 274 transitions. Second operand has 13 states, 12 states have (on average 3.0) internal successors, (36), 13 states have internal predecessors, (36), 12 states have call successors, (42), 2 states have call predecessors, (42), 3 states have return successors, (42), 11 states have call predecessors, (42), 12 states have call successors, (42) [2022-11-23 13:59:19,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:59:19,834 INFO L93 Difference]: Finished difference Result 247 states and 327 transitions. [2022-11-23 13:59:19,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-23 13:59:19,835 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 13 states have internal predecessors, (36), 12 states have call successors, (42), 2 states have call predecessors, (42), 3 states have return successors, (42), 11 states have call predecessors, (42), 12 states have call successors, (42) Word has length 129 [2022-11-23 13:59:19,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:59:19,837 INFO L225 Difference]: With dead ends: 247 [2022-11-23 13:59:19,837 INFO L226 Difference]: Without dead ends: 168 [2022-11-23 13:59:19,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 332 SyntacticMatches, 22 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 953 ImplicationChecksByTransitivity, 74.0s TimeCoverageRelationStatistics Valid=237, Invalid=1485, Unknown=0, NotChecked=0, Total=1722 [2022-11-23 13:59:19,838 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 39 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 13:59:19,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 219 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 13:59:19,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2022-11-23 13:59:19,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2022-11-23 13:59:19,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 89 states have (on average 1.0898876404494382) internal successors, (97), 90 states have internal predecessors, (97), 63 states have call successors, (63), 15 states have call predecessors, (63), 15 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2022-11-23 13:59:19,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 222 transitions. [2022-11-23 13:59:19,948 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 222 transitions. Word has length 129 [2022-11-23 13:59:19,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:59:19,948 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 222 transitions. [2022-11-23 13:59:19,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 13 states have internal predecessors, (36), 12 states have call successors, (42), 2 states have call predecessors, (42), 3 states have return successors, (42), 11 states have call predecessors, (42), 12 states have call successors, (42) [2022-11-23 13:59:19,949 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 222 transitions. [2022-11-23 13:59:19,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-23 13:59:19,951 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:59:19,951 INFO L195 NwaCegarLoop]: trace histogram [23, 22, 22, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:59:19,956 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196c3a27-02e2-4921-8d55-2303b4c2668b/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-23 13:59:20,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196c3a27-02e2-4921-8d55-2303b4c2668b/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-23 13:59:20,155 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:59:20,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:59:20,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1911860483, now seen corresponding path program 4 times [2022-11-23 13:59:20,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:59:20,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088024718] [2022-11-23 13:59:20,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:59:20,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:59:20,168 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 13:59:20,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [140048132] [2022-11-23 13:59:20,169 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-23 13:59:20,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:59:20,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196c3a27-02e2-4921-8d55-2303b4c2668b/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:59:20,170 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196c3a27-02e2-4921-8d55-2303b4c2668b/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 13:59:20,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196c3a27-02e2-4921-8d55-2303b4c2668b/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-23 13:59:20,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:59:20,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-23 13:59:20,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:59:20,395 INFO L134 CoverageAnalysis]: Checked inductivity of 1085 backedges. 232 proven. 60 refuted. 0 times theorem prover too weak. 793 trivial. 0 not checked. [2022-11-23 13:59:20,395 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 13:59:20,627 INFO L134 CoverageAnalysis]: Checked inductivity of 1085 backedges. 70 proven. 66 refuted. 0 times theorem prover too weak. 949 trivial. 0 not checked. [2022-11-23 13:59:20,627 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:59:20,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088024718] [2022-11-23 13:59:20,628 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 13:59:20,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140048132] [2022-11-23 13:59:20,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [140048132] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 13:59:20,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1761210228] [2022-11-23 13:59:20,630 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2022-11-23 13:59:20,630 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 13:59:20,630 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 13:59:20,631 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 13:59:20,631 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 13:59:23,266 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 39 for LOIs [2022-11-23 13:59:23,308 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 58 for LOIs [2022-11-23 13:59:23,329 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 13:59:49,080 WARN L233 SmtUtils]: Spent 21.77s on a formula simplification. DAG size of input: 179 DAG size of output: 150 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:00:01,911 WARN L233 SmtUtils]: Spent 9.68s on a formula simplification that was a NOOP. DAG size: 75 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:00:19,620 WARN L233 SmtUtils]: Spent 16.93s on a formula simplification. DAG size of input: 77 DAG size of output: 75 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:00:20,336 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '12917#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-23 14:00:20,336 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 14:00:20,336 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 14:00:20,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2022-11-23 14:00:20,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593398786] [2022-11-23 14:00:20,337 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 14:00:20,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-23 14:00:20,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:00:20,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-23 14:00:20,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=908, Unknown=0, NotChecked=0, Total=1056 [2022-11-23 14:00:20,339 INFO L87 Difference]: Start difference. First operand 168 states and 222 transitions. Second operand has 14 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 12 states have call successors, (45), 2 states have call predecessors, (45), 3 states have return successors, (45), 12 states have call predecessors, (45), 12 states have call successors, (45) [2022-11-23 14:00:21,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:00:21,137 INFO L93 Difference]: Finished difference Result 176 states and 228 transitions. [2022-11-23 14:00:21,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-23 14:00:21,138 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 12 states have call successors, (45), 2 states have call predecessors, (45), 3 states have return successors, (45), 12 states have call predecessors, (45), 12 states have call successors, (45) Word has length 154 [2022-11-23 14:00:21,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:00:21,139 INFO L225 Difference]: With dead ends: 176 [2022-11-23 14:00:21,139 INFO L226 Difference]: Without dead ends: 0 [2022-11-23 14:00:21,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 402 SyntacticMatches, 27 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1061 ImplicationChecksByTransitivity, 57.3s TimeCoverageRelationStatistics Valid=227, Invalid=1413, Unknown=0, NotChecked=0, Total=1640 [2022-11-23 14:00:21,140 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 43 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 14:00:21,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 205 Invalid, 509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 14:00:21,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-23 14:00:21,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-23 14:00:21,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:00:21,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-23 14:00:21,142 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 154 [2022-11-23 14:00:21,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:00:21,142 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-23 14:00:21,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 12 states have call successors, (45), 2 states have call predecessors, (45), 3 states have return successors, (45), 12 states have call predecessors, (45), 12 states have call successors, (45) [2022-11-23 14:00:21,142 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-23 14:00:21,143 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-23 14:00:21,145 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-23 14:00:21,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196c3a27-02e2-4921-8d55-2303b4c2668b/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-23 14:00:21,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196c3a27-02e2-4921-8d55-2303b4c2668b/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-23 14:00:21,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-23 14:00:48,660 INFO L895 garLoopResultBuilder]: At program point L48(line 48) the Hoare annotation is: (let ((.cse40 (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse41 (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|))) (let ((.cse45 (select |#memory_int| 1)) (.cse36 (+ (* 2 |ULTIMATE.start_main_~b~0#1|) |ULTIMATE.start_main_~c~0#1|)) (.cse6 (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse7 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse4 (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse5 (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse8 (+ .cse40 .cse41))) (let ((.cse2 (or (= (+ .cse4 .cse5) .cse8) (not (= |ULTIMATE.start_main_~c~0#1| 0)))) (.cse11 (= (+ .cse6 .cse7) |ULTIMATE.start_main_~b~0#1|)) (.cse24 (<= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse27 (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|)) (.cse30 (= |ULTIMATE.start_main_~a~0#1| (+ |ULTIMATE.start_main_~c~0#1| (* |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~k~0#1|)))) (.cse3 (= (+ (* |ULTIMATE.start_main_~xy~0#1| |ULTIMATE.start_main_~q~0#1|) (* |ULTIMATE.start_main_~yy~0#1| |ULTIMATE.start_main_~s~0#1|) |ULTIMATE.start_main_~b~0#1|) (+ .cse6 .cse7 (* |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|)))) (.cse29 (<= .cse36 2)) (.cse33 (= |ULTIMATE.start_main_~s~0#1| 0)) (.cse16 (= (select |#valid| 0) 0)) (.cse17 (= (select |#valid| 2) 1)) (.cse18 (= |#NULL.offset| 0)) (.cse20 (= (select .cse45 0) 48)) (.cse21 (= .cse8 |ULTIMATE.start_main_~a~0#1|)) (.cse22 (<= |ULTIMATE.start_main_~x~0#1| 2)) (.cse31 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse32 (= |ULTIMATE.start_main_~q~0#1| 1)) (.cse35 (= |ULTIMATE.start_main_~r~0#1| 1)) (.cse0 (= (select |#length| 3) 12)) (.cse1 (not (= (ite (<= 1 |ULTIMATE.start_main_~y~0#1|) 1 0) 0))) (.cse9 (= 11 (select |#length| 2))) (.cse10 (= 2 (select |#length| 1))) (.cse12 (= (select |#valid| 3) 1)) (.cse13 (= |ULTIMATE.start_main_~r~0#1| 0)) (.cse14 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse15 (= (select |#valid| 1) 1)) (.cse19 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse25 (= |ULTIMATE.start_main_~s~0#1| 1)) (.cse34 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse23 (= (select .cse45 1) 0)) (.cse26 (< 0 |#StackHeapBarrier|)) (.cse28 (= |#NULL.base| 0))) (or (and .cse0 .cse1 .cse2 .cse3 (or (= (+ .cse4 .cse5 .cse6 .cse7) .cse8) (not (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|))) .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 .cse16 .cse17 .cse18 .cse19 .cse20 .cse21 .cse22 .cse23 .cse24 .cse25 .cse26 (= .cse27 |ULTIMATE.start_main_~x~0#1|) .cse28) (and .cse0 .cse1 .cse2 .cse3 .cse9 .cse10 .cse11 .cse12 .cse29 (<= 0 |ULTIMATE.start_main_~c~0#1|) .cse13 .cse14 .cse15 .cse16 .cse17 .cse18 .cse19 .cse20 .cse21 .cse22 .cse23 .cse24 .cse25 .cse26 .cse28) (and .cse0 .cse30 .cse3 (= .cse27 |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~p~0#1| 0) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) .cse9 .cse10 (<= 1 |ULTIMATE.start_main_~c~0#1|) .cse31 .cse12 .cse32 .cse33 .cse34 .cse15 .cse35 .cse16 .cse17 .cse18 .cse20 (<= .cse27 2) .cse23 .cse26 .cse28) (and .cse0 .cse30 .cse3 (<= (+ |ULTIMATE.start_main_~b~0#1| 1) |ULTIMATE.start_main_~a~0#1|) .cse9 .cse10 .cse31 .cse12 .cse29 .cse32 .cse33 .cse34 .cse15 .cse35 (= .cse36 |ULTIMATE.start_main_~y~0#1|) .cse16 .cse17 .cse18 .cse20 .cse21 .cse23 (= 2 |ULTIMATE.start_main_~k~0#1|) .cse26 .cse28) (and .cse16 .cse17 .cse18 .cse20 .cse21 .cse22 (let ((.cse37 (not (= 0 (ite .cse34 1 0)))) (.cse42 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse38 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~c~0#1|)) (.cse39 (not (= (ite (and (<= |ULTIMATE.start_main_~y~0#1| 2) (<= 0 |ULTIMATE.start_main_~y~0#1|)) 1 0) 0))) (.cse43 (= |ULTIMATE.start_main_~k~0#1| 0)) (.cse44 (= |ULTIMATE.start_main_~xy~0#1| (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)))) (or (and .cse0 .cse37 (= |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~temp~0#1|) .cse38 .cse39 (< |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|) .cse9 .cse10 .cse31 .cse12 (not (= (ite (= (+ .cse40 .cse41 .cse42) (+ (* |ULTIMATE.start_main_~xy~0#1| |ULTIMATE.start_main_~p~0#1|) |ULTIMATE.start_main_~y~0#1| (* |ULTIMATE.start_main_~yy~0#1| |ULTIMATE.start_main_~r~0#1|))) 1 0) 0)) .cse32 .cse43 .cse15 .cse35 (not (= (ite (= (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~temp~0#1|) 0) 1 0) 0)) (not (= (ite (= .cse8 |ULTIMATE.start_main_~y~0#1|) 1 0) 0)) .cse44) (and .cse0 .cse37 .cse1 (= |ULTIMATE.start_main_~yy~0#1| .cse42) .cse38 .cse39 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) .cse9 .cse10 .cse12 .cse13 .cse14 .cse43 .cse15 .cse44 .cse19 .cse25))) .cse23 .cse26 .cse28))))) [2022-11-23 14:00:48,661 INFO L895 garLoopResultBuilder]: At program point L48-1(line 48) the Hoare annotation is: (let ((.cse40 (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse41 (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|))) (let ((.cse45 (select |#memory_int| 1)) (.cse36 (+ (* 2 |ULTIMATE.start_main_~b~0#1|) |ULTIMATE.start_main_~c~0#1|)) (.cse6 (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse7 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse4 (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse5 (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse8 (+ .cse40 .cse41))) (let ((.cse2 (or (= (+ .cse4 .cse5) .cse8) (not (= |ULTIMATE.start_main_~c~0#1| 0)))) (.cse11 (= (+ .cse6 .cse7) |ULTIMATE.start_main_~b~0#1|)) (.cse24 (<= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse27 (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|)) (.cse30 (= |ULTIMATE.start_main_~a~0#1| (+ |ULTIMATE.start_main_~c~0#1| (* |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~k~0#1|)))) (.cse3 (= (+ (* |ULTIMATE.start_main_~xy~0#1| |ULTIMATE.start_main_~q~0#1|) (* |ULTIMATE.start_main_~yy~0#1| |ULTIMATE.start_main_~s~0#1|) |ULTIMATE.start_main_~b~0#1|) (+ .cse6 .cse7 (* |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|)))) (.cse29 (<= .cse36 2)) (.cse33 (= |ULTIMATE.start_main_~s~0#1| 0)) (.cse16 (= (select |#valid| 0) 0)) (.cse17 (= (select |#valid| 2) 1)) (.cse18 (= |#NULL.offset| 0)) (.cse20 (= (select .cse45 0) 48)) (.cse21 (= .cse8 |ULTIMATE.start_main_~a~0#1|)) (.cse22 (<= |ULTIMATE.start_main_~x~0#1| 2)) (.cse31 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse32 (= |ULTIMATE.start_main_~q~0#1| 1)) (.cse35 (= |ULTIMATE.start_main_~r~0#1| 1)) (.cse0 (= (select |#length| 3) 12)) (.cse1 (not (= (ite (<= 1 |ULTIMATE.start_main_~y~0#1|) 1 0) 0))) (.cse9 (= 11 (select |#length| 2))) (.cse10 (= 2 (select |#length| 1))) (.cse12 (= (select |#valid| 3) 1)) (.cse13 (= |ULTIMATE.start_main_~r~0#1| 0)) (.cse14 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse15 (= (select |#valid| 1) 1)) (.cse19 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse25 (= |ULTIMATE.start_main_~s~0#1| 1)) (.cse34 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse23 (= (select .cse45 1) 0)) (.cse26 (< 0 |#StackHeapBarrier|)) (.cse28 (= |#NULL.base| 0))) (or (and .cse0 .cse1 .cse2 .cse3 (or (= (+ .cse4 .cse5 .cse6 .cse7) .cse8) (not (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|))) .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 .cse16 .cse17 .cse18 .cse19 .cse20 .cse21 .cse22 .cse23 .cse24 .cse25 .cse26 (= .cse27 |ULTIMATE.start_main_~x~0#1|) .cse28) (and .cse0 .cse1 .cse2 .cse3 .cse9 .cse10 .cse11 .cse12 .cse29 (<= 0 |ULTIMATE.start_main_~c~0#1|) .cse13 .cse14 .cse15 .cse16 .cse17 .cse18 .cse19 .cse20 .cse21 .cse22 .cse23 .cse24 .cse25 .cse26 .cse28) (and .cse0 .cse30 .cse3 (= .cse27 |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~p~0#1| 0) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) .cse9 .cse10 (<= 1 |ULTIMATE.start_main_~c~0#1|) .cse31 .cse12 .cse32 .cse33 .cse34 .cse15 .cse35 .cse16 .cse17 .cse18 .cse20 (<= .cse27 2) .cse23 .cse26 .cse28) (and .cse0 .cse30 .cse3 (<= (+ |ULTIMATE.start_main_~b~0#1| 1) |ULTIMATE.start_main_~a~0#1|) .cse9 .cse10 .cse31 .cse12 .cse29 .cse32 .cse33 .cse34 .cse15 .cse35 (= .cse36 |ULTIMATE.start_main_~y~0#1|) .cse16 .cse17 .cse18 .cse20 .cse21 .cse23 (= 2 |ULTIMATE.start_main_~k~0#1|) .cse26 .cse28) (and .cse16 .cse17 .cse18 .cse20 .cse21 .cse22 (let ((.cse37 (not (= 0 (ite .cse34 1 0)))) (.cse42 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse38 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~c~0#1|)) (.cse39 (not (= (ite (and (<= |ULTIMATE.start_main_~y~0#1| 2) (<= 0 |ULTIMATE.start_main_~y~0#1|)) 1 0) 0))) (.cse43 (= |ULTIMATE.start_main_~k~0#1| 0)) (.cse44 (= |ULTIMATE.start_main_~xy~0#1| (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)))) (or (and .cse0 .cse37 (= |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~temp~0#1|) .cse38 .cse39 (< |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|) .cse9 .cse10 .cse31 .cse12 (not (= (ite (= (+ .cse40 .cse41 .cse42) (+ (* |ULTIMATE.start_main_~xy~0#1| |ULTIMATE.start_main_~p~0#1|) |ULTIMATE.start_main_~y~0#1| (* |ULTIMATE.start_main_~yy~0#1| |ULTIMATE.start_main_~r~0#1|))) 1 0) 0)) .cse32 .cse43 .cse15 .cse35 (not (= (ite (= (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~temp~0#1|) 0) 1 0) 0)) (not (= (ite (= .cse8 |ULTIMATE.start_main_~y~0#1|) 1 0) 0)) .cse44) (and .cse0 .cse37 .cse1 (= |ULTIMATE.start_main_~yy~0#1| .cse42) .cse38 .cse39 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) .cse9 .cse10 .cse12 .cse13 .cse14 .cse43 .cse15 .cse44 .cse19 .cse25))) .cse23 .cse26 .cse28))))) [2022-11-23 14:00:48,661 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-23 14:00:48,661 INFO L895 garLoopResultBuilder]: At program point L24(line 24) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (= 11 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (not (= (ite (and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2)) 1 0) 0)) (<= 0 (+ |ULTIMATE.start_main_~y~0#1| 2147483648)) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-11-23 14:00:48,662 INFO L895 garLoopResultBuilder]: At program point L24-1(line 24) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (not (= (ite (and (<= |ULTIMATE.start_main_~y~0#1| 2) (<= 0 |ULTIMATE.start_main_~y~0#1|)) 1 0) 0)) (= 11 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (not (= (ite (and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2)) 1 0) 0)) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-11-23 14:00:48,662 INFO L895 garLoopResultBuilder]: At program point L49(line 49) the Hoare annotation is: (let ((.cse40 (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse41 (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|))) (let ((.cse45 (select |#memory_int| 1)) (.cse36 (+ (* 2 |ULTIMATE.start_main_~b~0#1|) |ULTIMATE.start_main_~c~0#1|)) (.cse6 (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse7 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse4 (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse5 (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse8 (+ .cse40 .cse41))) (let ((.cse2 (or (= (+ .cse4 .cse5) .cse8) (not (= |ULTIMATE.start_main_~c~0#1| 0)))) (.cse11 (= (+ .cse6 .cse7) |ULTIMATE.start_main_~b~0#1|)) (.cse24 (<= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse27 (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|)) (.cse30 (= |ULTIMATE.start_main_~a~0#1| (+ |ULTIMATE.start_main_~c~0#1| (* |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~k~0#1|)))) (.cse3 (= (+ (* |ULTIMATE.start_main_~xy~0#1| |ULTIMATE.start_main_~q~0#1|) (* |ULTIMATE.start_main_~yy~0#1| |ULTIMATE.start_main_~s~0#1|) |ULTIMATE.start_main_~b~0#1|) (+ .cse6 .cse7 (* |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|)))) (.cse29 (<= .cse36 2)) (.cse33 (= |ULTIMATE.start_main_~s~0#1| 0)) (.cse16 (= (select |#valid| 0) 0)) (.cse17 (= (select |#valid| 2) 1)) (.cse18 (= |#NULL.offset| 0)) (.cse20 (= (select .cse45 0) 48)) (.cse21 (= .cse8 |ULTIMATE.start_main_~a~0#1|)) (.cse22 (<= |ULTIMATE.start_main_~x~0#1| 2)) (.cse31 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse32 (= |ULTIMATE.start_main_~q~0#1| 1)) (.cse35 (= |ULTIMATE.start_main_~r~0#1| 1)) (.cse0 (= (select |#length| 3) 12)) (.cse1 (not (= (ite (<= 1 |ULTIMATE.start_main_~y~0#1|) 1 0) 0))) (.cse9 (= 11 (select |#length| 2))) (.cse10 (= 2 (select |#length| 1))) (.cse12 (= (select |#valid| 3) 1)) (.cse13 (= |ULTIMATE.start_main_~r~0#1| 0)) (.cse14 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse15 (= (select |#valid| 1) 1)) (.cse19 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse25 (= |ULTIMATE.start_main_~s~0#1| 1)) (.cse34 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse23 (= (select .cse45 1) 0)) (.cse26 (< 0 |#StackHeapBarrier|)) (.cse28 (= |#NULL.base| 0))) (or (and .cse0 .cse1 .cse2 .cse3 (or (= (+ .cse4 .cse5 .cse6 .cse7) .cse8) (not (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|))) .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 .cse16 .cse17 .cse18 .cse19 .cse20 .cse21 .cse22 .cse23 .cse24 .cse25 .cse26 (= .cse27 |ULTIMATE.start_main_~x~0#1|) .cse28) (and .cse0 .cse1 .cse2 .cse3 .cse9 .cse10 .cse11 .cse12 .cse29 (<= 0 |ULTIMATE.start_main_~c~0#1|) .cse13 .cse14 .cse15 .cse16 .cse17 .cse18 .cse19 .cse20 .cse21 .cse22 .cse23 .cse24 .cse25 .cse26 .cse28) (and .cse0 .cse30 .cse3 (= .cse27 |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~p~0#1| 0) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) .cse9 .cse10 (<= 1 |ULTIMATE.start_main_~c~0#1|) .cse31 .cse12 .cse32 .cse33 .cse34 .cse15 .cse35 .cse16 .cse17 .cse18 .cse20 (<= .cse27 2) .cse23 .cse26 .cse28) (and .cse0 .cse30 .cse3 (<= (+ |ULTIMATE.start_main_~b~0#1| 1) |ULTIMATE.start_main_~a~0#1|) .cse9 .cse10 .cse31 .cse12 .cse29 .cse32 .cse33 .cse34 .cse15 .cse35 (= .cse36 |ULTIMATE.start_main_~y~0#1|) .cse16 .cse17 .cse18 .cse20 .cse21 .cse23 (= 2 |ULTIMATE.start_main_~k~0#1|) .cse26 .cse28) (and .cse16 .cse17 .cse18 .cse20 .cse21 .cse22 (let ((.cse37 (not (= 0 (ite .cse34 1 0)))) (.cse42 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse38 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~c~0#1|)) (.cse39 (not (= (ite (and (<= |ULTIMATE.start_main_~y~0#1| 2) (<= 0 |ULTIMATE.start_main_~y~0#1|)) 1 0) 0))) (.cse43 (= |ULTIMATE.start_main_~k~0#1| 0)) (.cse44 (= |ULTIMATE.start_main_~xy~0#1| (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)))) (or (and .cse0 .cse37 (= |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~temp~0#1|) .cse38 .cse39 (< |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|) .cse9 .cse10 .cse31 .cse12 (not (= (ite (= (+ .cse40 .cse41 .cse42) (+ (* |ULTIMATE.start_main_~xy~0#1| |ULTIMATE.start_main_~p~0#1|) |ULTIMATE.start_main_~y~0#1| (* |ULTIMATE.start_main_~yy~0#1| |ULTIMATE.start_main_~r~0#1|))) 1 0) 0)) .cse32 .cse43 .cse15 .cse35 (not (= (ite (= (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~temp~0#1|) 0) 1 0) 0)) (not (= (ite (= .cse8 |ULTIMATE.start_main_~y~0#1|) 1 0) 0)) .cse44) (and .cse0 .cse37 .cse1 (= |ULTIMATE.start_main_~yy~0#1| .cse42) .cse38 .cse39 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) .cse9 .cse10 .cse12 .cse13 .cse14 .cse43 .cse15 .cse44 .cse19 .cse25))) .cse23 .cse26 .cse28))))) [2022-11-23 14:00:48,662 INFO L895 garLoopResultBuilder]: At program point L41-1(lines 39 68) the Hoare annotation is: (let ((.cse20 (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|))) (.cse25 (select |#memory_int| 1)) (.cse23 (<= |ULTIMATE.start_main_~y~0#1| 2))) (let ((.cse7 (= |ULTIMATE.start_main_~k~0#1| 0)) (.cse18 (not (= (ite (<= 1 |ULTIMATE.start_main_~y~0#1|) 1 0) 0))) (.cse2 (not (= (ite (and .cse23 (<= 0 |ULTIMATE.start_main_~y~0#1|)) 1 0) 0))) (.cse0 (* 2 |ULTIMATE.start_main_~b~0#1|)) (.cse21 (<= |ULTIMATE.start_main_~x~0#1| 2)) (.cse19 (+ (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|))) (.cse1 (= (select |#length| 3) 12)) (.cse3 (<= (+ |ULTIMATE.start_main_~b~0#1| 1) |ULTIMATE.start_main_~a~0#1|)) (.cse4 (= 11 (select |#length| 2))) (.cse5 (= 2 (select |#length| 1))) (.cse6 (= (select |#valid| 3) 1)) (.cse8 (<= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|)) (.cse9 (= (select |#valid| 1) 1)) (.cse10 (= (select |#valid| 0) 0)) (.cse11 (= (select |#valid| 2) 1)) (.cse12 (= |#NULL.offset| 0)) (.cse13 (= (select .cse25 0) 48)) (.cse14 (= .cse20 |ULTIMATE.start_main_~a~0#1|)) (.cse15 (= (select .cse25 1) 0)) (.cse22 (= |ULTIMATE.start_main_~s~0#1| 1)) (.cse16 (< 0 |#StackHeapBarrier|)) (.cse17 (= |#NULL.base| 0))) (or (and (<= 0 (+ 4611686016279904256 |ULTIMATE.start_main_~xy~0#1|)) (< |ULTIMATE.start_main_~c~0#1| .cse0) .cse1 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) .cse2 .cse3 .cse4 .cse5 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) .cse6 (<= 0 (+ 4611686016279904256 |ULTIMATE.start_main_~yy~0#1|)) (<= 0 |ULTIMATE.start_main_~p~0#1|) (<= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~q~0#1| 1) .cse7 (= |ULTIMATE.start_main_~s~0#1| 0) .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 (<= |ULTIMATE.start_main_~yy~0#1| 4611686018427387904) (<= |ULTIMATE.start_main_~xy~0#1| 4611686018427387904) .cse15 .cse16 .cse17) (and (= |ULTIMATE.start_main_~c~0#1| 0) .cse1 .cse18 (= |ULTIMATE.start_main_~yy~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) .cse4 .cse5 (= .cse19 |ULTIMATE.start_main_~b~0#1|) .cse6 (= |ULTIMATE.start_main_~r~0#1| 0) (= |ULTIMATE.start_main_~q~0#1| 0) .cse7 .cse9 (<= 1 .cse20) .cse10 .cse11 .cse12 (= |ULTIMATE.start_main_~xy~0#1| (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|) .cse13 (<= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|) 2) .cse14 .cse21 .cse15 .cse22 .cse16 .cse17) (and (<= (* 2 |ULTIMATE.start_main_~c~0#1|) 1) (<= 0 |ULTIMATE.start_main_~b~0#1|) .cse1 .cse18 .cse2 .cse4 .cse5 .cse6 (<= 0 |ULTIMATE.start_main_~c~0#1|) (<= 1 |ULTIMATE.start_main_~x~0#1|) .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 (<= .cse0 1) .cse21 (= .cse19 0) .cse15 .cse16 .cse17) (let ((.cse24 (* 2 |ULTIMATE.start_main_~x~0#1|))) (and .cse1 .cse23 (<= |ULTIMATE.start_main_~a~0#1| 2) .cse3 .cse4 .cse5 .cse6 (<= .cse24 |ULTIMATE.start_main_~y~0#1|) (= (+ 2 |ULTIMATE.start_main_~q~0#1|) 0) .cse8 .cse9 .cse10 .cse11 .cse12 (= |ULTIMATE.start_main_~y~0#1| (+ .cse24 |ULTIMATE.start_main_~b~0#1|)) .cse13 .cse14 (not (<= (* 3 |ULTIMATE.start_main_~x~0#1|) |ULTIMATE.start_main_~y~0#1|)) .cse15 .cse22 .cse16 .cse17))))) [2022-11-23 14:00:48,663 INFO L895 garLoopResultBuilder]: At program point L41-2(lines 41 68) the Hoare annotation is: (let ((.cse0 (+ (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|))) (.cse1 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (not (= (ite (<= 1 |ULTIMATE.start_main_~y~0#1|) 1 0) 0)) (not (= (ite (and (<= |ULTIMATE.start_main_~y~0#1| 2) (<= 0 |ULTIMATE.start_main_~y~0#1|)) 1 0) 0)) (= 11 (select |#length| 2)) (= 2 (select |#length| 1)) (= .cse0 |ULTIMATE.start_main_~b~0#1|) (= (select |#valid| 3) 1) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (not (= (ite (and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2)) 1 0) 0)) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse1 0) 48) (= (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~a~0#1|) (= .cse0 0) (= (select .cse1 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-11-23 14:00:48,663 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-23 14:00:48,663 INFO L895 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (not (= (ite (and (<= |ULTIMATE.start_main_~y~0#1| 2) (<= 0 |ULTIMATE.start_main_~y~0#1|)) 1 0) 0)) (= 11 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (<= |ULTIMATE.start_main_~x~0#1| 2) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-11-23 14:00:48,664 INFO L895 garLoopResultBuilder]: At program point L50(line 50) the Hoare annotation is: (let ((.cse40 (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse41 (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|))) (let ((.cse45 (select |#memory_int| 1)) (.cse36 (+ (* 2 |ULTIMATE.start_main_~b~0#1|) |ULTIMATE.start_main_~c~0#1|)) (.cse6 (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse7 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse4 (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse5 (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse8 (+ .cse40 .cse41))) (let ((.cse2 (or (= (+ .cse4 .cse5) .cse8) (not (= |ULTIMATE.start_main_~c~0#1| 0)))) (.cse11 (= (+ .cse6 .cse7) |ULTIMATE.start_main_~b~0#1|)) (.cse24 (<= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse27 (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|)) (.cse30 (= |ULTIMATE.start_main_~a~0#1| (+ |ULTIMATE.start_main_~c~0#1| (* |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~k~0#1|)))) (.cse3 (= (+ (* |ULTIMATE.start_main_~xy~0#1| |ULTIMATE.start_main_~q~0#1|) (* |ULTIMATE.start_main_~yy~0#1| |ULTIMATE.start_main_~s~0#1|) |ULTIMATE.start_main_~b~0#1|) (+ .cse6 .cse7 (* |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|)))) (.cse29 (<= .cse36 2)) (.cse33 (= |ULTIMATE.start_main_~s~0#1| 0)) (.cse16 (= (select |#valid| 0) 0)) (.cse17 (= (select |#valid| 2) 1)) (.cse18 (= |#NULL.offset| 0)) (.cse20 (= (select .cse45 0) 48)) (.cse21 (= .cse8 |ULTIMATE.start_main_~a~0#1|)) (.cse22 (<= |ULTIMATE.start_main_~x~0#1| 2)) (.cse31 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse32 (= |ULTIMATE.start_main_~q~0#1| 1)) (.cse35 (= |ULTIMATE.start_main_~r~0#1| 1)) (.cse0 (= (select |#length| 3) 12)) (.cse1 (not (= (ite (<= 1 |ULTIMATE.start_main_~y~0#1|) 1 0) 0))) (.cse9 (= 11 (select |#length| 2))) (.cse10 (= 2 (select |#length| 1))) (.cse12 (= (select |#valid| 3) 1)) (.cse13 (= |ULTIMATE.start_main_~r~0#1| 0)) (.cse14 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse15 (= (select |#valid| 1) 1)) (.cse19 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse25 (= |ULTIMATE.start_main_~s~0#1| 1)) (.cse34 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse23 (= (select .cse45 1) 0)) (.cse26 (< 0 |#StackHeapBarrier|)) (.cse28 (= |#NULL.base| 0))) (or (and .cse0 .cse1 .cse2 .cse3 (or (= (+ .cse4 .cse5 .cse6 .cse7) .cse8) (not (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|))) .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 .cse16 .cse17 .cse18 .cse19 .cse20 .cse21 .cse22 .cse23 .cse24 .cse25 .cse26 (= .cse27 |ULTIMATE.start_main_~x~0#1|) .cse28) (and .cse0 .cse1 .cse2 .cse3 .cse9 .cse10 .cse11 .cse12 .cse29 (<= 0 |ULTIMATE.start_main_~c~0#1|) .cse13 .cse14 .cse15 .cse16 .cse17 .cse18 .cse19 .cse20 .cse21 .cse22 .cse23 .cse24 .cse25 .cse26 .cse28) (and .cse0 .cse30 .cse3 (= .cse27 |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~p~0#1| 0) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) .cse9 .cse10 (<= 1 |ULTIMATE.start_main_~c~0#1|) .cse31 .cse12 .cse32 .cse33 .cse34 .cse15 .cse35 .cse16 .cse17 .cse18 .cse20 (<= .cse27 2) .cse23 .cse26 .cse28) (and .cse0 .cse30 .cse3 (<= (+ |ULTIMATE.start_main_~b~0#1| 1) |ULTIMATE.start_main_~a~0#1|) .cse9 .cse10 .cse31 .cse12 .cse29 .cse32 .cse33 .cse34 .cse15 .cse35 (= .cse36 |ULTIMATE.start_main_~y~0#1|) .cse16 .cse17 .cse18 .cse20 .cse21 .cse23 (= 2 |ULTIMATE.start_main_~k~0#1|) .cse26 .cse28) (and .cse16 .cse17 .cse18 .cse20 .cse21 .cse22 (let ((.cse37 (not (= 0 (ite .cse34 1 0)))) (.cse42 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse38 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~c~0#1|)) (.cse39 (not (= (ite (and (<= |ULTIMATE.start_main_~y~0#1| 2) (<= 0 |ULTIMATE.start_main_~y~0#1|)) 1 0) 0))) (.cse43 (= |ULTIMATE.start_main_~k~0#1| 0)) (.cse44 (= |ULTIMATE.start_main_~xy~0#1| (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)))) (or (and .cse0 .cse37 (= |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~temp~0#1|) .cse38 .cse39 (< |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|) .cse9 .cse10 .cse31 .cse12 (not (= (ite (= (+ .cse40 .cse41 .cse42) (+ (* |ULTIMATE.start_main_~xy~0#1| |ULTIMATE.start_main_~p~0#1|) |ULTIMATE.start_main_~y~0#1| (* |ULTIMATE.start_main_~yy~0#1| |ULTIMATE.start_main_~r~0#1|))) 1 0) 0)) .cse32 .cse43 .cse15 .cse35 (not (= (ite (= (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~temp~0#1|) 0) 1 0) 0)) (not (= (ite (= .cse8 |ULTIMATE.start_main_~y~0#1|) 1 0) 0)) .cse44) (and .cse0 .cse37 .cse1 (= |ULTIMATE.start_main_~yy~0#1| .cse42) .cse38 .cse39 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) .cse9 .cse10 .cse12 .cse13 .cse14 .cse43 .cse15 .cse44 .cse19 .cse25))) .cse23 .cse26 .cse28))))) [2022-11-23 14:00:48,664 INFO L899 garLoopResultBuilder]: For program point L42(lines 42 43) no Hoare annotation was computed. [2022-11-23 14:00:48,664 INFO L895 garLoopResultBuilder]: At program point L71(line 71) the Hoare annotation is: (let ((.cse3 (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse4 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|))) (let ((.cse6 (select |#memory_int| 1)) (.cse1 (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse2 (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse5 (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|))) (.cse0 (= (+ .cse3 .cse4) |ULTIMATE.start_main_~b~0#1|)) (.cse7 (<= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|))) (and (= (select |#length| 3) 12) (not (= (ite (<= 1 |ULTIMATE.start_main_~y~0#1|) 1 0) 0)) (not (= (ite (and (<= |ULTIMATE.start_main_~y~0#1| 2) (<= 0 |ULTIMATE.start_main_~y~0#1|)) 1 0) 0)) (= 11 (select |#length| 2)) (= 2 (select |#length| 1)) (or (= |ULTIMATE.start_main_~b~0#1| 0) .cse0) (= (select |#valid| 3) 1) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= (select |#valid| 1) 1) (or (= (+ .cse1 .cse2 .cse3 .cse4) .cse5) (<= (* 2 |ULTIMATE.start_main_~b~0#1|) |ULTIMATE.start_main_~c~0#1|) (not (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|))) (= (select |#valid| 0) 0) (not (= (ite (and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2)) 1 0) 0)) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse6 0) 48) (= .cse5 |ULTIMATE.start_main_~a~0#1|) (= (select .cse6 1) 0) (or (= (+ .cse1 .cse2) .cse5) .cse7 (not (= |ULTIMATE.start_main_~c~0#1| 0))) (or .cse0 .cse7) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0)))) [2022-11-23 14:00:48,665 INFO L895 garLoopResultBuilder]: At program point L38(line 38) the Hoare annotation is: (let ((.cse0 (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|))) (.cse1 (select |#memory_int| 1))) (and (= |ULTIMATE.start_main_~c~0#1| 0) (= (select |#length| 3) 12) (not (= (ite (<= 1 |ULTIMATE.start_main_~y~0#1|) 1 0) 0)) (= |ULTIMATE.start_main_~yy~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (= 11 (select |#length| 2)) (= 2 (select |#length| 1)) (= (+ (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~b~0#1|) (= (select |#valid| 3) 1) (= |ULTIMATE.start_main_~r~0#1| 0) (= |ULTIMATE.start_main_~q~0#1| 0) (= |ULTIMATE.start_main_~k~0#1| 0) (= (select |#valid| 1) 1) (<= 1 .cse0) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= |ULTIMATE.start_main_~xy~0#1| (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|) (= (select .cse1 0) 48) (<= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|) 2) (= .cse0 |ULTIMATE.start_main_~a~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2) (= (select .cse1 1) 0) (= |ULTIMATE.start_main_~s~0#1| 1) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-11-23 14:00:48,665 INFO L895 garLoopResultBuilder]: At program point L38-1(line 38) the Hoare annotation is: (let ((.cse0 (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|))) (.cse1 (select |#memory_int| 1))) (and (= |ULTIMATE.start_main_~c~0#1| 0) (= (select |#length| 3) 12) (not (= (ite (<= 1 |ULTIMATE.start_main_~y~0#1|) 1 0) 0)) (= |ULTIMATE.start_main_~yy~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (= 11 (select |#length| 2)) (= 2 (select |#length| 1)) (= (+ (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~b~0#1|) (= (select |#valid| 3) 1) (= |ULTIMATE.start_main_~r~0#1| 0) (= |ULTIMATE.start_main_~q~0#1| 0) (= |ULTIMATE.start_main_~k~0#1| 0) (= (select |#valid| 1) 1) (<= 1 .cse0) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= |ULTIMATE.start_main_~xy~0#1| (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|) (= (select .cse1 0) 48) (<= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|) 2) (= .cse0 |ULTIMATE.start_main_~a~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2) (= (select .cse1 1) 0) (= |ULTIMATE.start_main_~s~0#1| 1) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-11-23 14:00:48,665 INFO L899 garLoopResultBuilder]: For program point L26(line 26) no Hoare annotation was computed. [2022-11-23 14:00:48,665 INFO L895 garLoopResultBuilder]: At program point L22(line 22) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (= 11 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 2147483648)) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-11-23 14:00:48,666 INFO L899 garLoopResultBuilder]: For program point L22-1(line 22) no Hoare annotation was computed. [2022-11-23 14:00:48,666 INFO L899 garLoopResultBuilder]: For program point L51(lines 47 56) no Hoare annotation was computed. [2022-11-23 14:00:48,666 INFO L895 garLoopResultBuilder]: At program point L47-2(lines 47 56) the Hoare annotation is: (let ((.cse40 (select |#memory_int| 1)) (.cse38 (+ |ULTIMATE.start_main_~b~0#1| 1)) (.cse37 (+ (* 2 |ULTIMATE.start_main_~b~0#1|) |ULTIMATE.start_main_~c~0#1|)) (.cse6 (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse7 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse4 (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse5 (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse8 (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)))) (let ((.cse2 (or (= (+ .cse4 .cse5) .cse8) (not (= |ULTIMATE.start_main_~c~0#1| 0)))) (.cse11 (= (+ .cse6 .cse7) |ULTIMATE.start_main_~b~0#1|)) (.cse24 (<= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse27 (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|)) (.cse30 (= |ULTIMATE.start_main_~a~0#1| (+ |ULTIMATE.start_main_~c~0#1| (* |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~k~0#1|)))) (.cse3 (= (+ (* |ULTIMATE.start_main_~xy~0#1| |ULTIMATE.start_main_~q~0#1|) (* |ULTIMATE.start_main_~yy~0#1| |ULTIMATE.start_main_~s~0#1|) |ULTIMATE.start_main_~b~0#1|) (+ .cse6 .cse7 (* |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|)))) (.cse29 (<= .cse37 2)) (.cse36 (<= .cse38 |ULTIMATE.start_main_~a~0#1|)) (.cse31 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse32 (= |ULTIMATE.start_main_~q~0#1| 1)) (.cse33 (= |ULTIMATE.start_main_~s~0#1| 0)) (.cse34 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse35 (= |ULTIMATE.start_main_~r~0#1| 1)) (.cse0 (= (select |#length| 3) 12)) (.cse1 (not (= (ite (<= 1 |ULTIMATE.start_main_~y~0#1|) 1 0) 0))) (.cse9 (= 11 (select |#length| 2))) (.cse10 (= 2 (select |#length| 1))) (.cse12 (= (select |#valid| 3) 1)) (.cse13 (= |ULTIMATE.start_main_~r~0#1| 0)) (.cse14 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse39 (= |ULTIMATE.start_main_~k~0#1| 0)) (.cse15 (= (select |#valid| 1) 1)) (.cse16 (= (select |#valid| 0) 0)) (.cse17 (= (select |#valid| 2) 1)) (.cse18 (= |#NULL.offset| 0)) (.cse19 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse20 (= (select .cse40 0) 48)) (.cse21 (= .cse8 |ULTIMATE.start_main_~a~0#1|)) (.cse22 (<= |ULTIMATE.start_main_~x~0#1| 2)) (.cse23 (= (select .cse40 1) 0)) (.cse25 (= |ULTIMATE.start_main_~s~0#1| 1)) (.cse26 (< 0 |#StackHeapBarrier|)) (.cse28 (= |#NULL.base| 0))) (or (and .cse0 .cse1 .cse2 .cse3 (or (= (+ .cse4 .cse5 .cse6 .cse7) .cse8) (not (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|))) .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 .cse16 .cse17 .cse18 .cse19 .cse20 .cse21 .cse22 .cse23 .cse24 .cse25 .cse26 (= .cse27 |ULTIMATE.start_main_~x~0#1|) .cse28) (and .cse0 .cse1 .cse2 .cse3 .cse9 .cse10 .cse11 .cse12 .cse29 (<= 0 |ULTIMATE.start_main_~c~0#1|) .cse13 .cse14 .cse15 .cse16 .cse17 .cse18 .cse19 .cse20 .cse21 .cse22 .cse23 .cse24 .cse25 .cse26 .cse28) (and .cse0 .cse30 .cse3 (= .cse27 |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~p~0#1| 0) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) .cse9 .cse10 (<= 1 |ULTIMATE.start_main_~c~0#1|) .cse31 .cse12 .cse32 .cse33 .cse34 .cse15 .cse35 .cse16 .cse17 .cse18 .cse20 (<= .cse27 2) .cse23 .cse26 .cse28) (and .cse0 .cse30 .cse3 .cse36 .cse9 .cse10 .cse31 .cse12 .cse29 .cse32 .cse33 .cse34 .cse15 .cse35 (= .cse37 |ULTIMATE.start_main_~y~0#1|) .cse16 .cse17 .cse18 .cse20 .cse21 .cse23 (= 2 |ULTIMATE.start_main_~k~0#1|) .cse26 .cse28) (and (<= 0 (+ 4611686016279904256 |ULTIMATE.start_main_~xy~0#1|)) .cse0 (<= |ULTIMATE.start_main_~a~0#1| 2) .cse36 .cse9 .cse10 .cse31 (<= .cse38 |ULTIMATE.start_main_~c~0#1|) .cse12 (<= 0 (+ 4611686016279904256 |ULTIMATE.start_main_~yy~0#1|)) .cse32 .cse39 .cse33 .cse34 (<= |ULTIMATE.start_main_~c~0#1| 2) .cse15 .cse35 .cse16 (= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~y~0#1|) .cse17 .cse18 .cse20 .cse21 (<= |ULTIMATE.start_main_~yy~0#1| 4611686018427387904) (<= |ULTIMATE.start_main_~xy~0#1| 4611686018427387904) .cse23 .cse26 .cse28) (and .cse0 .cse1 (= |ULTIMATE.start_main_~yy~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~c~0#1|) (not (= (ite (and (<= |ULTIMATE.start_main_~y~0#1| 2) (<= 0 |ULTIMATE.start_main_~y~0#1|)) 1 0) 0)) (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) .cse9 .cse10 .cse12 .cse13 .cse14 .cse39 .cse15 (<= 1 .cse8) .cse16 .cse17 .cse18 (= |ULTIMATE.start_main_~xy~0#1| (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)) .cse19 .cse20 .cse21 .cse22 .cse23 .cse25 .cse26 .cse28)))) [2022-11-23 14:00:48,667 INFO L899 garLoopResultBuilder]: For program point L47-3(lines 47 56) no Hoare annotation was computed. [2022-11-23 14:00:48,667 INFO L902 garLoopResultBuilder]: At program point L72(line 72) the Hoare annotation is: true [2022-11-23 14:00:48,667 INFO L902 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 7 9) the Hoare annotation is: true [2022-11-23 14:00:48,667 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 7 9) no Hoare annotation was computed. [2022-11-23 14:00:48,667 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 10 16) the Hoare annotation is: true [2022-11-23 14:00:48,667 INFO L899 garLoopResultBuilder]: For program point L12(lines 12 13) no Hoare annotation was computed. [2022-11-23 14:00:48,667 INFO L899 garLoopResultBuilder]: For program point L11(lines 11 14) no Hoare annotation was computed. [2022-11-23 14:00:48,668 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 10 16) no Hoare annotation was computed. [2022-11-23 14:00:48,668 INFO L899 garLoopResultBuilder]: For program point L11-2(lines 10 16) no Hoare annotation was computed. [2022-11-23 14:00:48,668 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2022-11-23 14:00:48,670 INFO L444 BasicCegarLoop]: Path program histogram: [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:00:48,672 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 14:00:48,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 02:00:48 BoogieIcfgContainer [2022-11-23 14:00:48,704 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 14:00:48,705 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 14:00:48,705 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 14:00:48,705 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 14:00:48,706 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:52:11" (3/4) ... [2022-11-23 14:00:48,709 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-23 14:00:48,715 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2022-11-23 14:00:48,715 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-11-23 14:00:48,719 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2022-11-23 14:00:48,719 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-11-23 14:00:48,719 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-23 14:00:48,719 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-23 14:00:48,773 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196c3a27-02e2-4921-8d55-2303b4c2668b/bin/utaipan-Q6hlc19bkW/witness.graphml [2022-11-23 14:00:48,773 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 14:00:48,774 INFO L158 Benchmark]: Toolchain (without parser) took 517914.35ms. Allocated memory was 165.7MB in the beginning and 524.3MB in the end (delta: 358.6MB). Free memory was 133.9MB in the beginning and 350.8MB in the end (delta: -216.9MB). Peak memory consumption was 143.7MB. Max. memory is 16.1GB. [2022-11-23 14:00:48,774 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 165.7MB. Free memory is still 134.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 14:00:48,775 INFO L158 Benchmark]: CACSL2BoogieTranslator took 276.88ms. Allocated memory is still 165.7MB. Free memory was 133.9MB in the beginning and 122.7MB in the end (delta: 11.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-23 14:00:48,775 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.85ms. Allocated memory is still 165.7MB. Free memory was 122.7MB in the beginning and 121.1MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 14:00:48,775 INFO L158 Benchmark]: Boogie Preprocessor took 22.06ms. Allocated memory is still 165.7MB. Free memory was 120.6MB in the beginning and 119.4MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 14:00:48,776 INFO L158 Benchmark]: RCFGBuilder took 454.82ms. Allocated memory is still 165.7MB. Free memory was 119.4MB in the beginning and 106.5MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-23 14:00:48,776 INFO L158 Benchmark]: TraceAbstraction took 517048.40ms. Allocated memory was 165.7MB in the beginning and 524.3MB in the end (delta: 358.6MB). Free memory was 105.3MB in the beginning and 353.9MB in the end (delta: -248.6MB). Peak memory consumption was 295.0MB. Max. memory is 16.1GB. [2022-11-23 14:00:48,776 INFO L158 Benchmark]: Witness Printer took 68.40ms. Allocated memory is still 524.3MB. Free memory was 353.9MB in the beginning and 350.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 14:00:48,778 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 165.7MB. Free memory is still 134.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 276.88ms. Allocated memory is still 165.7MB. Free memory was 133.9MB in the beginning and 122.7MB in the end (delta: 11.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.85ms. Allocated memory is still 165.7MB. Free memory was 122.7MB in the beginning and 121.1MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 22.06ms. Allocated memory is still 165.7MB. Free memory was 120.6MB in the beginning and 119.4MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 454.82ms. Allocated memory is still 165.7MB. Free memory was 119.4MB in the beginning and 106.5MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 517048.40ms. Allocated memory was 165.7MB in the beginning and 524.3MB in the end (delta: 358.6MB). Free memory was 105.3MB in the beginning and 353.9MB in the end (delta: -248.6MB). Peak memory consumption was 295.0MB. Max. memory is 16.1GB. * Witness Printer took 68.40ms. Allocated memory is still 524.3MB. Free memory was 353.9MB in the beginning and 350.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 13]: 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 3 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 516.9s, OverallIterations: 16, TraceHistogramMax: 23, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 37.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 27.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 801 SdHoareTripleChecker+Valid, 20.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 732 mSDsluCounter, 2558 SdHoareTripleChecker+Invalid, 19.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1895 mSDsCounter, 1050 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4968 IncrementalHoareTripleChecker+Invalid, 6018 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1050 mSolverCounterUnsat, 663 mSDtfsCounter, 4968 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3280 GetRequests, 2608 SyntacticMatches, 176 SemanticMatches, 496 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10294 ImplicationChecksByTransitivity, 400.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=204occurred in iteration=14, InterpolantAutomatonStates: 219, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 16 MinimizatonAttempts, 95 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 17 LocationsWithAnnotation, 194 PreInvPairs, 266 NumberOfFragments, 5595 HoareAnnotationTreeSize, 194 FomulaSimplifications, 3302 FormulaSimplificationTreeSizeReduction, 1.3s HoareSimplificationTime, 17 FomulaSimplificationsInter, 52092 FormulaSimplificationTreeSizeReductionInter, 26.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 11.2s InterpolantComputationTime, 1127 NumberOfCodeBlocks, 1046 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 2155 ConstructedInterpolants, 0 QuantifiedInterpolants, 8374 SizeOfPredicates, 104 NumberOfNonLiveVariables, 3050 ConjunctsInSsa, 374 ConjunctsInUnsatCore, 30 InterpolantComputations, 4 PerfectInterpolantSequences, 7453/7936 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: OVERALL_TIME: 12.6s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 8, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 98, DAG_INTERPRETER_EARLY_EXITS: 3, TOOLS_POST_APPLICATIONS: 51, TOOLS_POST_TIME: 0.7s, TOOLS_POST_CALL_APPLICATIONS: 92, TOOLS_POST_CALL_TIME: 9.2s, TOOLS_POST_RETURN_APPLICATIONS: 66, TOOLS_POST_RETURN_TIME: 0.8s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 209, TOOLS_QUANTIFIERELIM_TIME: 10.6s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.4s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 227, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 116, DOMAIN_JOIN_TIME: 1.4s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 1, DOMAIN_WIDEN_TIME: 0.0s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 2, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 98, DOMAIN_ISBOTTOM_TIME: 0.2s, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME: 4.3s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 4.3s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 2, CALL_SUMMARIZER_APPLICATIONS: 66, CALL_SUMMARIZER_CACHE_MISSES: 5, CALL_SUMMARIZER_OVERALL_TIME: 0.0s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 1324, DAG_COMPRESSION_RETAINED_NODES: 224, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((((((((unknown-#length-unknown[3] == 12 && !((if 1 <= y then 1 else 0) == 0)) && (k * q * x + k * s * y == r * y + p * x || !(c == 0))) && xy * q + yy * s + b == s * y + q * x + b * y) && (k * q * x + k * s * y + s * y + q * x == r * y + p * x || !(b == c))) && 11 == unknown-#length-unknown[2]) && 2 == unknown-#length-unknown[1]) && s * y + q * x == b) && \valid[3] == 1) && r == 0) && q == 0) && \valid[1] == 1) && \valid[0] == 0) && \valid[2] == 1) && #NULL == 0) && a == x) && unknown-#memory_int-unknown[1][0] == 48) && r * y + p * x == a) && x <= 2) && unknown-#memory_int-unknown[1][1] == 0) && b <= x) && s == 1) && 0 < unknown-#StackHeapBarrier-unknown) && b + c == x) && #NULL == 0) || ((((((((((((((((((((((((unknown-#length-unknown[3] == 12 && !((if 1 <= y then 1 else 0) == 0)) && (k * q * x + k * s * y == r * y + p * x || !(c == 0))) && xy * q + yy * s + b == s * y + q * x + b * y) && 11 == unknown-#length-unknown[2]) && 2 == unknown-#length-unknown[1]) && s * y + q * x == b) && \valid[3] == 1) && 2 * b + c <= 2) && 0 <= c) && r == 0) && q == 0) && \valid[1] == 1) && \valid[0] == 0) && \valid[2] == 1) && #NULL == 0) && a == x) && unknown-#memory_int-unknown[1][0] == 48) && r * y + p * x == a) && x <= 2) && unknown-#memory_int-unknown[1][1] == 0) && b <= x) && s == 1) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0)) || (((((((((((((((((((((((unknown-#length-unknown[3] == 12 && a == c + b * k) && xy * q + yy * s + b == s * y + q * x + b * y) && b + c == y) && p == 0) && a == y) && 11 == unknown-#length-unknown[2]) && 2 == unknown-#length-unknown[1]) && 1 <= c) && b == x) && \valid[3] == 1) && q == 1) && s == 0) && 1 <= x) && \valid[1] == 1) && r == 1) && \valid[0] == 0) && \valid[2] == 1) && #NULL == 0) && unknown-#memory_int-unknown[1][0] == 48) && b + c <= 2) && unknown-#memory_int-unknown[1][1] == 0) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0)) || (((((((((((((((((((((((unknown-#length-unknown[3] == 12 && a == c + b * k) && xy * q + yy * s + b == s * y + q * x + b * y) && b + 1 <= a) && 11 == unknown-#length-unknown[2]) && 2 == unknown-#length-unknown[1]) && b == x) && \valid[3] == 1) && 2 * b + c <= 2) && q == 1) && s == 0) && 1 <= x) && \valid[1] == 1) && r == 1) && 2 * b + c == y) && \valid[0] == 0) && \valid[2] == 1) && #NULL == 0) && unknown-#memory_int-unknown[1][0] == 48) && r * y + p * x == a) && unknown-#memory_int-unknown[1][1] == 0) && 2 == k) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0)) || (((((((((((((((((((((((((((0 <= 4611686016279904256 + xy && unknown-#length-unknown[3] == 12) && a <= 2) && b + 1 <= a) && 11 == unknown-#length-unknown[2]) && 2 == unknown-#length-unknown[1]) && b == x) && b + 1 <= c) && \valid[3] == 1) && 0 <= 4611686016279904256 + yy) && q == 1) && k == 0) && s == 0) && 1 <= x) && c <= 2) && \valid[1] == 1) && r == 1) && \valid[0] == 0) && c == y) && \valid[2] == 1) && #NULL == 0) && unknown-#memory_int-unknown[1][0] == 48) && r * y + p * x == a) && yy <= 4611686018427387904) && xy <= 4611686018427387904) && unknown-#memory_int-unknown[1][1] == 0) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0)) || (((((((((((((((((((((((((unknown-#length-unknown[3] == 12 && !((if 1 <= y then 1 else 0) == 0)) && yy == y * y) && a == c) && !((if y <= 2 && 0 <= y then 1 else 0) == 0)) && b == y) && 11 == unknown-#length-unknown[2]) && 2 == unknown-#length-unknown[1]) && \valid[3] == 1) && r == 0) && q == 0) && k == 0) && \valid[1] == 1) && 1 <= r * y + p * x) && \valid[0] == 0) && \valid[2] == 1) && #NULL == 0) && xy == x * y) && a == x) && unknown-#memory_int-unknown[1][0] == 48) && r * y + p * x == a) && x <= 2) && unknown-#memory_int-unknown[1][1] == 0) && s == 1) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) - InvariantResult [Line: 72]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: (((((((((((((((((((((((((((((0 <= 4611686016279904256 + xy && c < 2 * b) && unknown-#length-unknown[3] == 12) && a == y) && !((if y <= 2 && 0 <= y then 1 else 0) == 0)) && b + 1 <= a) && 11 == unknown-#length-unknown[2]) && 2 == unknown-#length-unknown[1]) && b == x) && \valid[3] == 1) && 0 <= 4611686016279904256 + yy) && 0 <= p) && p <= 1) && q == 1) && k == 0) && s == 0) && b <= c) && \valid[1] == 1) && \valid[0] == 0) && \valid[2] == 1) && #NULL == 0) && unknown-#memory_int-unknown[1][0] == 48) && r * y + p * x == a) && yy <= 4611686018427387904) && xy <= 4611686018427387904) && unknown-#memory_int-unknown[1][1] == 0) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) || (((((((((((((((((((((((((c == 0 && unknown-#length-unknown[3] == 12) && !((if 1 <= y then 1 else 0) == 0)) && yy == y * y) && 11 == unknown-#length-unknown[2]) && 2 == unknown-#length-unknown[1]) && s * y + q * x == b) && \valid[3] == 1) && r == 0) && q == 0) && k == 0) && \valid[1] == 1) && 1 <= r * y + p * x) && \valid[0] == 0) && \valid[2] == 1) && #NULL == 0) && xy == x * y) && a == x) && unknown-#memory_int-unknown[1][0] == 48) && b + c <= 2) && r * y + p * x == a) && x <= 2) && unknown-#memory_int-unknown[1][1] == 0) && s == 1) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0)) || (((((((((((((((((((((2 * c <= 1 && 0 <= b) && unknown-#length-unknown[3] == 12) && !((if 1 <= y then 1 else 0) == 0)) && !((if y <= 2 && 0 <= y then 1 else 0) == 0)) && 11 == unknown-#length-unknown[2]) && 2 == unknown-#length-unknown[1]) && \valid[3] == 1) && 0 <= c) && 1 <= x) && \valid[1] == 1) && \valid[0] == 0) && \valid[2] == 1) && #NULL == 0) && unknown-#memory_int-unknown[1][0] == 48) && r * y + p * x == a) && 2 * b <= 1) && x <= 2) && s * y + q * x == 0) && unknown-#memory_int-unknown[1][1] == 0) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0)) || (((((((((((((((((((((unknown-#length-unknown[3] == 12 && y <= 2) && a <= 2) && b + 1 <= a) && 11 == unknown-#length-unknown[2]) && 2 == unknown-#length-unknown[1]) && \valid[3] == 1) && 2 * x <= y) && 2 + q == 0) && b <= c) && \valid[1] == 1) && \valid[0] == 0) && \valid[2] == 1) && #NULL == 0) && y == 2 * x + b) && unknown-#memory_int-unknown[1][0] == 48) && r * y + p * x == a) && !(3 * x <= y)) && unknown-#memory_int-unknown[1][1] == 0) && s == 1) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) RESULT: Ultimate proved your program to be correct! [2022-11-23 14:00:48,896 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_196c3a27-02e2-4921-8d55-2303b4c2668b/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE