./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-array/btor2c-lazyMod.unsafe_linked_list_fifo_n2d4.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-array/btor2c-lazyMod.unsafe_linked_list_fifo_n2d4.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 96d9860a7686f708af2c69f8c9732693665f35b4386bdf987f4dd5e89313b9fb --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 09:25:01,134 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 09:25:01,135 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 09:25:01,148 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 09:25:01,148 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 09:25:01,149 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 09:25:01,149 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 09:25:01,150 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 09:25:01,151 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 09:25:01,152 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 09:25:01,152 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 09:25:01,153 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 09:25:01,153 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 09:25:01,154 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 09:25:01,155 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 09:25:01,155 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 09:25:01,156 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 09:25:01,157 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 09:25:01,157 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 09:25:01,159 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 09:25:01,159 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 09:25:01,160 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 09:25:01,161 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 09:25:01,162 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 09:25:01,164 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 09:25:01,164 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 09:25:01,164 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 09:25:01,165 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 09:25:01,165 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 09:25:01,166 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 09:25:01,166 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 09:25:01,166 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 09:25:01,167 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 09:25:01,167 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 09:25:01,168 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 09:25:01,168 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 09:25:01,168 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 09:25:01,169 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 09:25:01,169 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 09:25:01,169 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 09:25:01,170 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 09:25:01,171 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-12-14 09:25:01,185 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 09:25:01,186 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 09:25:01,186 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 09:25:01,186 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 09:25:01,197 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 09:25:01,197 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 09:25:01,197 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 09:25:01,197 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 09:25:01,197 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 09:25:01,198 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 09:25:01,198 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 09:25:01,198 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 09:25:01,198 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 09:25:01,198 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 09:25:01,199 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 09:25:01,199 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 09:25:01,199 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 09:25:01,199 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 09:25:01,200 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 09:25:01,200 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 09:25:01,200 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 09:25:01,200 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 09:25:01,200 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 09:25:01,200 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 09:25:01,201 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 09:25:01,201 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 09:25:01,201 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 09:25:01,201 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 09:25:01,201 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 09:25:01,201 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 09:25:01,202 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 09:25:01,202 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 09:25:01,202 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 09:25:01,202 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 09:25:01,202 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 09:25:01,202 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 09:25:01,203 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 09:25:01,203 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 09:25:01,203 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_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 96d9860a7686f708af2c69f8c9732693665f35b4386bdf987f4dd5e89313b9fb [2022-12-14 09:25:01,394 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 09:25:01,414 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 09:25:01,417 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 09:25:01,418 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 09:25:01,419 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 09:25:01,420 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/hardware-verification-array/btor2c-lazyMod.unsafe_linked_list_fifo_n2d4.c [2022-12-14 09:25:04,020 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 09:25:04,230 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 09:25:04,231 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/sv-benchmarks/c/hardware-verification-array/btor2c-lazyMod.unsafe_linked_list_fifo_n2d4.c [2022-12-14 09:25:04,240 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/data/e1ac88b55/4070b6970e674352b655a681914ca77c/FLAGfcdbf5538 [2022-12-14 09:25:04,251 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/data/e1ac88b55/4070b6970e674352b655a681914ca77c [2022-12-14 09:25:04,253 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 09:25:04,254 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 09:25:04,255 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 09:25:04,255 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 09:25:04,258 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 09:25:04,259 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 09:25:04" (1/1) ... [2022-12-14 09:25:04,260 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e28e552 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:25:04, skipping insertion in model container [2022-12-14 09:25:04,260 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 09:25:04" (1/1) ... [2022-12-14 09:25:04,267 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 09:25:04,313 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 09:25:04,433 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_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/sv-benchmarks/c/hardware-verification-array/btor2c-lazyMod.unsafe_linked_list_fifo_n2d4.c[1107,1120] [2022-12-14 09:25:04,606 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 09:25:04,613 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 09:25:04,621 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_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/sv-benchmarks/c/hardware-verification-array/btor2c-lazyMod.unsafe_linked_list_fifo_n2d4.c[1107,1120] [2022-12-14 09:25:04,733 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 09:25:04,746 INFO L208 MainTranslator]: Completed translation [2022-12-14 09:25:04,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:25:04 WrapperNode [2022-12-14 09:25:04,747 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 09:25:04,748 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 09:25:04,748 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 09:25:04,748 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 09:25:04,755 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:25:04" (1/1) ... [2022-12-14 09:25:04,779 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:25:04" (1/1) ... [2022-12-14 09:25:04,836 INFO L138 Inliner]: procedures = 15, calls = 102, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1472 [2022-12-14 09:25:04,837 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 09:25:04,837 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 09:25:04,837 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 09:25:04,837 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 09:25:04,844 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:25:04" (1/1) ... [2022-12-14 09:25:04,844 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:25:04" (1/1) ... [2022-12-14 09:25:04,855 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:25:04" (1/1) ... [2022-12-14 09:25:04,855 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:25:04" (1/1) ... [2022-12-14 09:25:04,883 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:25:04" (1/1) ... [2022-12-14 09:25:04,888 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:25:04" (1/1) ... [2022-12-14 09:25:04,893 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:25:04" (1/1) ... [2022-12-14 09:25:04,899 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:25:04" (1/1) ... [2022-12-14 09:25:04,908 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 09:25:04,909 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 09:25:04,909 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 09:25:04,909 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 09:25:04,910 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:25:04" (1/1) ... [2022-12-14 09:25:04,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 09:25:04,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:25:04,933 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 09:25:04,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 09:25:04,968 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-12-14 09:25:04,968 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-12-14 09:25:04,968 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 09:25:04,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 09:25:04,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 09:25:04,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 09:25:04,969 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 09:25:04,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 09:25:05,207 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 09:25:05,209 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 09:25:07,029 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 09:25:07,198 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 09:25:07,198 INFO L300 CfgBuilder]: Removed 19 assume(true) statements. [2022-12-14 09:25:07,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 09:25:07 BoogieIcfgContainer [2022-12-14 09:25:07,201 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 09:25:07,203 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 09:25:07,203 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 09:25:07,205 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 09:25:07,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 09:25:04" (1/3) ... [2022-12-14 09:25:07,206 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@661f66d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 09:25:07, skipping insertion in model container [2022-12-14 09:25:07,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:25:04" (2/3) ... [2022-12-14 09:25:07,206 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@661f66d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 09:25:07, skipping insertion in model container [2022-12-14 09:25:07,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 09:25:07" (3/3) ... [2022-12-14 09:25:07,207 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.unsafe_linked_list_fifo_n2d4.c [2022-12-14 09:25:07,221 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 09:25:07,222 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 09:25:07,261 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 09:25:07,267 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;@1de32e7b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 09:25:07,267 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 09:25:07,270 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 29 states have (on average 1.7241379310344827) internal successors, (50), 30 states have internal predecessors, (50), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-12-14 09:25:07,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-12-14 09:25:07,277 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:25:07,278 INFO L195 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:25:07,278 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:25:07,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:25:07,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1901032191, now seen corresponding path program 1 times [2022-12-14 09:25:07,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:25:07,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612719040] [2022-12-14 09:25:07,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:25:07,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:25:07,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:25:07,973 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 09:25:07,974 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:25:07,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612719040] [2022-12-14 09:25:07,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612719040] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:25:07,975 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:25:07,975 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 09:25:07,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647704298] [2022-12-14 09:25:07,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:25:07,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 09:25:07,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:25:08,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 09:25:08,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 09:25:08,013 INFO L87 Difference]: Start difference. First operand has 37 states, 29 states have (on average 1.7241379310344827) internal successors, (50), 30 states have internal predecessors, (50), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-12-14 09:25:08,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:25:08,952 INFO L93 Difference]: Finished difference Result 72 states and 119 transitions. [2022-12-14 09:25:08,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 09:25:08,954 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 27 [2022-12-14 09:25:08,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:25:08,959 INFO L225 Difference]: With dead ends: 72 [2022-12-14 09:25:08,959 INFO L226 Difference]: Without dead ends: 37 [2022-12-14 09:25:08,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 09:25:08,963 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-14 09:25:08,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-14 09:25:08,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-12-14 09:25:08,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2022-12-14 09:25:08,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 30 states have (on average 1.6333333333333333) internal successors, (49), 30 states have internal predecessors, (49), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-12-14 09:25:08,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 59 transitions. [2022-12-14 09:25:08,990 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 59 transitions. Word has length 27 [2022-12-14 09:25:08,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:25:08,991 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 59 transitions. [2022-12-14 09:25:08,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-12-14 09:25:08,991 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 59 transitions. [2022-12-14 09:25:08,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-12-14 09:25:08,992 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:25:08,992 INFO L195 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:25:08,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 09:25:08,993 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:25:08,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:25:08,993 INFO L85 PathProgramCache]: Analyzing trace with hash 816922241, now seen corresponding path program 1 times [2022-12-14 09:25:08,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:25:08,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965425110] [2022-12-14 09:25:08,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:25:08,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:25:09,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:25:09,341 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 09:25:09,341 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:25:09,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965425110] [2022-12-14 09:25:09,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965425110] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 09:25:09,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [908209397] [2022-12-14 09:25:09,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:25:09,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:25:09,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:25:09,344 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:25:09,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 09:25:09,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:25:09,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 750 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 09:25:09,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:25:09,811 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 09:25:09,811 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 09:25:09,841 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-12-14 09:25:09,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [908209397] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-14 09:25:09,842 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-14 09:25:09,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2022-12-14 09:25:09,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097156942] [2022-12-14 09:25:09,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:25:09,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 09:25:09,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:25:09,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 09:25:09,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 09:25:09,845 INFO L87 Difference]: Start difference. First operand 37 states and 59 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-12-14 09:25:10,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:25:10,486 INFO L93 Difference]: Finished difference Result 70 states and 112 transitions. [2022-12-14 09:25:10,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 09:25:10,487 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 28 [2022-12-14 09:25:10,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:25:10,487 INFO L225 Difference]: With dead ends: 70 [2022-12-14 09:25:10,487 INFO L226 Difference]: Without dead ends: 38 [2022-12-14 09:25:10,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 09:25:10,488 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-14 09:25:10,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-14 09:25:10,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-12-14 09:25:10,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2022-12-14 09:25:10,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 31 states have (on average 1.6129032258064515) internal successors, (50), 31 states have internal predecessors, (50), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-12-14 09:25:10,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 60 transitions. [2022-12-14 09:25:10,493 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 60 transitions. Word has length 28 [2022-12-14 09:25:10,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:25:10,493 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 60 transitions. [2022-12-14 09:25:10,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-12-14 09:25:10,493 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 60 transitions. [2022-12-14 09:25:10,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-12-14 09:25:10,494 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:25:10,494 INFO L195 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:25:10,503 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 09:25:10,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:25:10,695 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:25:10,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:25:10,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1477751752, now seen corresponding path program 1 times [2022-12-14 09:25:10,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:25:10,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673320284] [2022-12-14 09:25:10,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:25:10,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:25:10,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:25:11,000 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-12-14 09:25:11,000 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:25:11,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673320284] [2022-12-14 09:25:11,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673320284] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 09:25:11,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1549828372] [2022-12-14 09:25:11,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:25:11,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:25:11,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:25:11,002 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:25:11,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 09:25:11,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:25:11,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 757 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 09:25:11,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:25:11,810 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-12-14 09:25:11,810 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 09:25:11,832 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-12-14 09:25:11,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1549828372] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-14 09:25:11,832 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-14 09:25:11,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2022-12-14 09:25:11,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111371494] [2022-12-14 09:25:11,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:25:11,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 09:25:11,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:25:11,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 09:25:11,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 09:25:11,834 INFO L87 Difference]: Start difference. First operand 38 states and 60 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-12-14 09:25:12,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:25:12,918 INFO L93 Difference]: Finished difference Result 73 states and 116 transitions. [2022-12-14 09:25:12,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 09:25:12,918 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 29 [2022-12-14 09:25:12,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:25:12,919 INFO L225 Difference]: With dead ends: 73 [2022-12-14 09:25:12,919 INFO L226 Difference]: Without dead ends: 39 [2022-12-14 09:25:12,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 09:25:12,920 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-12-14 09:25:12,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-12-14 09:25:12,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-12-14 09:25:12,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2022-12-14 09:25:12,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 32 states have (on average 1.59375) internal successors, (51), 32 states have internal predecessors, (51), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-12-14 09:25:12,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 61 transitions. [2022-12-14 09:25:12,924 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 61 transitions. Word has length 29 [2022-12-14 09:25:12,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:25:12,924 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 61 transitions. [2022-12-14 09:25:12,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-12-14 09:25:12,924 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 61 transitions. [2022-12-14 09:25:12,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-12-14 09:25:12,924 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:25:12,925 INFO L195 NwaCegarLoop]: trace histogram [5, 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] [2022-12-14 09:25:12,932 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-14 09:25:13,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:25:13,126 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:25:13,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:25:13,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1560105185, now seen corresponding path program 1 times [2022-12-14 09:25:13,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:25:13,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101378402] [2022-12-14 09:25:13,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:25:13,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:25:13,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:25:13,367 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-12-14 09:25:13,367 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:25:13,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101378402] [2022-12-14 09:25:13,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101378402] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 09:25:13,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [852460088] [2022-12-14 09:25:13,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:25:13,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:25:13,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:25:13,369 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:25:13,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 09:25:14,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:25:14,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 764 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-14 09:25:14,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:25:14,188 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-12-14 09:25:14,188 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 09:25:14,212 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-12-14 09:25:14,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [852460088] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 09:25:14,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1218986246] [2022-12-14 09:25:14,234 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2022-12-14 09:25:14,234 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 09:25:14,238 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 09:25:14,243 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 09:25:14,243 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 09:25:14,372 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 09:25:14,407 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 17 [2022-12-14 09:25:14,504 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2022-12-14 09:25:15,013 INFO L321 Elim1Store]: treesize reduction 41, result has 26.8 percent of original size [2022-12-14 09:25:15,014 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 652 treesize of output 659 [2022-12-14 09:25:15,752 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 37 [2022-12-14 09:25:15,831 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-14 09:25:15,865 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 09:25:15,953 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2022-12-14 09:25:16,334 INFO L321 Elim1Store]: treesize reduction 41, result has 26.8 percent of original size [2022-12-14 09:25:16,334 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 492 treesize of output 499 [2022-12-14 09:25:16,858 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 37 [2022-12-14 09:25:16,982 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 09:25:16,998 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-14 09:25:17,223 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 37 [2022-12-14 09:25:17,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:25:17,694 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 96 [2022-12-14 09:25:18,020 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 37 [2022-12-14 09:25:23,751 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 10 for LOIs [2022-12-14 09:25:23,752 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 09:25:45,154 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1128#(and (<= 1 |ULTIMATE.start_main_~var_93_arg_0~0#1|) (<= 0 |ULTIMATE.start_main_~var_25_arg_0~0#1|) (<= 33554432 |ULTIMATE.start_main_~msb_SORT_234~0#1|) (<= (+ |ULTIMATE.start_main_~mask_SORT_240~0#1| 1) 0) (<= (+ |ULTIMATE.start_main_~mask_SORT_238~0#1| 1) 0) (<= 0 (+ |ULTIMATE.start_main_~mask_SORT_240~0#1| 1)) (<= 1023 |ULTIMATE.start_main_~mask_SORT_202~0#1|) (<= 0 (+ |ULTIMATE.start_main_~mask_SORT_244~0#1| 1)) (<= 0 |ULTIMATE.start_main_~var_21~0#1|) (<= 2097152 |ULTIMATE.start_main_~msb_SORT_226~0#1|) (<= |ULTIMATE.start_main_~msb_SORT_216~0#1| 65536) (<= |ULTIMATE.start_main_~msb_SORT_212~0#1| 16384) (<= 2147483648 |ULTIMATE.start_main_~msb_SORT_156~0#1|) (<= |ULTIMATE.start_main_~#state_13~0#1.offset| 0) (<= 4096 |ULTIMATE.start_main_~msb_SORT_208~0#1|) (<= 0 (+ |ULTIMATE.start_main_~mask_SORT_222~0#1| 1)) (<= 7 |ULTIMATE.start_main_~mask_SORT_19~0#1|) (<= 0 |#NULL.base|) (<= |ULTIMATE.start_main_~msb_SORT_214~0#1| 32768) (<= |ULTIMATE.start_main_~msb_SORT_191~0#1| 8) (<= |ULTIMATE.start_main_~msb_SORT_156~0#1| 2147483648) (<= 0 |ULTIMATE.start_main_~#state_249~0#1.offset|) (<= |ULTIMATE.start_main_~msb_SORT_226~0#1| 2097152) (<= |ULTIMATE.start_main_~mask_SORT_200~0#1| 511) (<= |ULTIMATE.start_main_~msb_SORT_197~0#1| 64) (<= 0 (+ |ULTIMATE.start_main_~mask_SORT_232~0#1| 1)) (<= (+ |ULTIMATE.start_main_~mask_SORT_242~0#1| 1) 0) (<= 256 |ULTIMATE.start_main_~msb_SORT_200~0#1|) (<= |ULTIMATE.start_main_~var_24~0#1| 1) (<= 0 |ULTIMATE.start_main_~var_22_arg_0~0#1|) (<= 0 |ULTIMATE.start_main_~#state_13~0#1.base|) (<= 0 |ULTIMATE.start_main_~var_50_arg_1~0#1|) (<= |ULTIMATE.start_main_~var_50_arg_1~0#1| 0) (<= 0 (+ |ULTIMATE.start_main_~mask_SORT_242~0#1| 1)) (<= 0 |ULTIMATE.start_main_~var_508~0#1|) (<= |ULTIMATE.start_main_~var_513~0#1| 3) (<= 0 |ULTIMATE.start_main_~i~1#1|) (<= |ULTIMATE.start_main_~var_93_arg_0~0#1| 1) (<= 0 |ULTIMATE.start_main_~var_92~0#1|) (<= |ULTIMATE.start_main_~mask_SORT_197~0#1| 127) (<= (+ |ULTIMATE.start_main_~mask_SORT_232~0#1| 1) 0) (<= 0 |ULTIMATE.start_main_~var_52_arg_0~0#1|) (<= |ULTIMATE.start_main_~var_83_arg_0~0#1| 1) (<= 0 |ULTIMATE.start_main_~var_51~0#1|) (<= |ULTIMATE.start_main_~mask_SORT_19~0#1| 7) (<= 8192 |ULTIMATE.start_main_~msb_SORT_210~0#1|) (<= 0 (+ |ULTIMATE.start_main_~mask_SORT_236~0#1| 1)) (<= |ULTIMATE.start_main_~var_21~0#1| 1) (<= 0 |ULTIMATE.start_main_~var_30~0#1|) (<= 1024 |ULTIMATE.start_main_~msb_SORT_204~0#1|) (<= |ULTIMATE.start_main_~msb_SORT_234~0#1| 33554432) (<= |ULTIMATE.start_main_~var_25_arg_0~0#1| 1) (<= |ULTIMATE.start_main_~var_16_arg_0~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#state_13~0#1.offset|) (<= |ULTIMATE.start_main_~msb_SORT_242~0#1| 536870912) (<= (+ |ULTIMATE.start_main_~mask_SORT_224~0#1| 1) 0) (<= 536870912 |ULTIMATE.start_main_~msb_SORT_242~0#1|) (<= 0 |ULTIMATE.start_main_~#state_249~0#1.base|) (<= |ULTIMATE.start_main_~mask_SORT_206~0#1| 4095) (<= |ULTIMATE.start_main_~var_531~0#1| 1) (<= |ULTIMATE.start_main_~mask_SORT_204~0#1| 2047) (<= 0 |ULTIMATE.start_main_~var_16_arg_0~0#1.offset|) (<= |ULTIMATE.start_main_~mask_SORT_193~0#1| 31) (<= |ULTIMATE.start_main_~var_51~0#1| 1) (<= (+ |ULTIMATE.start_main_~mask_SORT_236~0#1| 1) 0) (<= 0 |ULTIMATE.start_main_~var_17_arg_0~0#1.base|) (<= 4 |ULTIMATE.start_main_~msb_SORT_19~0#1|) (<= 1 |ULTIMATE.start_main_~var_77_arg_0~0#1|) (<= 0 (+ |ULTIMATE.start_main_~mask_SORT_220~0#1| 1)) (<= |ULTIMATE.start_main_~mask_SORT_202~0#1| 1023) (<= 32768 |ULTIMATE.start_main_~msb_SORT_214~0#1|) (<= 16777216 |ULTIMATE.start_main_~msb_SORT_232~0#1|) (<= |ULTIMATE.start_main_~#state_249~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~i~2#1|) (<= |ULTIMATE.start_main_~msb_SORT_228~0#1| 4194304) (<= |#NULL.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~mask_SORT_224~0#1| 1)) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= |ULTIMATE.start_main_~msb_SORT_193~0#1| 16) (<= 131072 |ULTIMATE.start_main_~msb_SORT_218~0#1|) (<= |ULTIMATE.start_main_~msb_SORT_210~0#1| 8192) (<= |ULTIMATE.start_main_~msb_SORT_206~0#1| 2048) (<= |ULTIMATE.start_main_~var_60~0#1| 0) (<= 0 (+ |ULTIMATE.start_main_~mask_SORT_156~0#1| 1)) (<= (+ |ULTIMATE.start_main_~mask_SORT_216~0#1| 1) 0) (<= 134217728 |ULTIMATE.start_main_~msb_SORT_238~0#1|) (<= |ULTIMATE.start_main_~var_89_arg_0~0#1| 1) (<= 0 (+ |ULTIMATE.start_main_~mask_SORT_234~0#1| 1)) (<= |ULTIMATE.start_main_~var_508~0#1| 0) (<= 4194304 |ULTIMATE.start_main_~msb_SORT_228~0#1|) (<= 128 |ULTIMATE.start_main_~msb_SORT_3~0#1|) (<= 64 |ULTIMATE.start_main_~msb_SORT_197~0#1|) (<= 1 |ULTIMATE.start_main_~mask_SORT_1~0#1|) (<= |ULTIMATE.start_main_~var_92~0#1| 1) (<= 1 |ULTIMATE.start_main_~var_83_arg_0~0#1|) (<= |ULTIMATE.start_main_~var_37~0#1| 1) (<= |ULTIMATE.start_main_~var_80_arg_0~0#1| 1) (<= |ULTIMATE.start_main_~var_401~0#1| 0) (<= 0 (+ |ULTIMATE.start_main_~mask_SORT_226~0#1| 1)) (<= |ULTIMATE.start_main_~msb_SORT_202~0#1| 512) (<= |ULTIMATE.start_main_~var_29~0#1| 4) (<= 1 |ULTIMATE.start_main_~state_61~0#1|) (<= |ULTIMATE.start_main_~msb_SORT_11~0#1| 2) (<= 0 |ULTIMATE.start_main_~var_37~0#1|) (<= |ULTIMATE.start_main_~init_62_arg_1~0#1| 1) (<= 65535 |ULTIMATE.start_main_~mask_SORT_214~0#1|) (<= (+ |ULTIMATE.start_main_~mask_SORT_218~0#1| 1) 0) (<= |ULTIMATE.start_main_~mask_SORT_3~0#1| 255) (<= |ULTIMATE.start_main_~var_59~0#1| 1) (<= (+ |ULTIMATE.start_main_~mask_SORT_220~0#1| 1) 0) (<= |ULTIMATE.start_main_~state_61~0#1| 1) (<= 127 |ULTIMATE.start_main_~mask_SORT_197~0#1|) (<= 2 |ULTIMATE.start_main_~var_519~0#1|) (<= 0 |ULTIMATE.start_main_~var_24~0#1|) (<= (+ |ULTIMATE.start_main_~mask_SORT_228~0#1| 1) 0) (<= |ULTIMATE.start_main_~msb_SORT_232~0#1| 16777216) (<= 0 (+ |ULTIMATE.start_main_~mask_SORT_228~0#1| 1)) (<= 2048 |ULTIMATE.start_main_~msb_SORT_206~0#1|) (<= |ULTIMATE.start_main_~var_30_arg_1~0#1| 4) (<= 0 |ULTIMATE.start_main_~#state_15~0#1.offset|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= 4 |ULTIMATE.start_main_~var_30_arg_1~0#1|) (<= 67108864 |ULTIMATE.start_main_~msb_SORT_236~0#1|) (<= 262144 |ULTIMATE.start_main_~msb_SORT_220~0#1|) (<= (+ |ULTIMATE.start_main_~mask_SORT_222~0#1| 1) 0) (<= |ULTIMATE.start_main_~msb_SORT_224~0#1| 1048576) (<= 0 |ULTIMATE.start_main_~var_57_arg_1~0#1|) (<= |ULTIMATE.start_main_~var_519~0#1| 2) (<= 511 |ULTIMATE.start_main_~mask_SORT_200~0#1|) (<= |ULTIMATE.start_main_~mask_SORT_195~0#1| 63) (<= 2047 |ULTIMATE.start_main_~mask_SORT_204~0#1|) (<= |ULTIMATE.start_main_~msb_SORT_3~0#1| 128) (<= 4 |ULTIMATE.start_main_~var_29~0#1|) (<= |ULTIMATE.start_main_~mask_SORT_208~0#1| 8191) (<= |ULTIMATE.start_main_~var_17_arg_0~0#1.offset| 0) (<= 1 |ULTIMATE.start_main_~var_63_arg_2~0#1|) (<= |ULTIMATE.start_main_~var_38_arg_1~0#1| 1) (<= 1 |ULTIMATE.start_main_~var_63_arg_0~0#1|) (<= 0 |ULTIMATE.start_main_~var_60~0#1|) (<= 1 |ULTIMATE.start_main_~var_59~0#1|) (<= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| 1) (<= |ULTIMATE.start_main_~msb_SORT_204~0#1| 1024) (<= 32 |ULTIMATE.start_main_~msb_SORT_195~0#1|) (<= |#NULL.base| 0) (<= 0 |ULTIMATE.start_main_~var_80_arg_0~0#1|) (<= (+ |ULTIMATE.start_main_~mask_SORT_230~0#1| 1) 0) (<= 31 |ULTIMATE.start_main_~mask_SORT_193~0#1|) (<= 1 |ULTIMATE.start_main_~var_92_arg_0~0#1|) (<= 8 |ULTIMATE.start_main_~msb_SORT_191~0#1|) (<= |ULTIMATE.start_main_~var_30~0#1| 1) (<= |ULTIMATE.start_main_~var_49~0#1| 0) (<= 268435456 |ULTIMATE.start_main_~msb_SORT_240~0#1|) (<= 0 |ULTIMATE.start_main_~var_17_arg_0~0#1.offset|) (<= |ULTIMATE.start_main_~msb_SORT_222~0#1| 524288) (<= |ULTIMATE.start_main_~mask_SORT_210~0#1| 16383) (<= 4095 |ULTIMATE.start_main_~mask_SORT_206~0#1|) (<= 8388608 |ULTIMATE.start_main_~msb_SORT_230~0#1|) (<= 15 |ULTIMATE.start_main_~mask_SORT_191~0#1|) (<= |ULTIMATE.start_main_~msb_SORT_200~0#1| 256) (<= |ULTIMATE.start_main_~var_63_arg_0~0#1| 1) (<= 2 |ULTIMATE.start_main_~msb_SORT_11~0#1|) (<= |ULTIMATE.start_main_~var_22_arg_0~0#1| 1) (<= 16384 |ULTIMATE.start_main_~msb_SORT_212~0#1|) (<= 16383 |ULTIMATE.start_main_~mask_SORT_210~0#1|) (<= |ULTIMATE.start_main_~msb_SORT_230~0#1| 8388608) (<= |ULTIMATE.start_main_~msb_SORT_208~0#1| 4096) (<= 3 |ULTIMATE.start_main_~mask_SORT_11~0#1|) (<= 63 |ULTIMATE.start_main_~mask_SORT_195~0#1|) (<= |ULTIMATE.start_main_~mask_SORT_191~0#1| 15) (<= |ULTIMATE.start_main_~#state_15~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~var_94_arg_0~0#1|) (<= 1 |ULTIMATE.start_main_~msb_SORT_1~0#1|) (<= (+ |ULTIMATE.start_main_~mask_SORT_226~0#1| 1) 0) (<= 1048576 |ULTIMATE.start_main_~msb_SORT_224~0#1|) (<= 0 |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= 255 |ULTIMATE.start_main_~mask_SORT_3~0#1|) (<= 0 (+ |ULTIMATE.start_main_~mask_SORT_238~0#1| 1)) (<= (+ |ULTIMATE.start_main_~mask_SORT_156~0#1| 1) 0) (<= |ULTIMATE.start_main_~msb_SORT_240~0#1| 268435456) (<= |ULTIMATE.start_main_~mask_SORT_11~0#1| 3) (<= |ULTIMATE.start_main_~var_77_arg_0~0#1| 1) (<= |ULTIMATE.start_main_~var_57_arg_1~0#1| 1) (<= 0 |ULTIMATE.start_main_~var_49~0#1|) (<= 16 |ULTIMATE.start_main_~msb_SORT_193~0#1|) (<= 0 |#NULL.offset|) (<= 0 |ULTIMATE.start_main_~var_63_arg_1~0#1|) (<= |ULTIMATE.start_main_~mask_SORT_214~0#1| 65535) (<= 32767 |ULTIMATE.start_main_~mask_SORT_212~0#1|) (<= |ULTIMATE.start_main_~var_92_arg_0~0#1| 1) (<= |ULTIMATE.start_main_~msb_SORT_236~0#1| 67108864) (<= 1 |ULTIMATE.start_main_~init_62_arg_1~0#1|) (<= |ULTIMATE.start_main_~var_56~0#1| 1) (<= |ULTIMATE.start_main_~msb_SORT_1~0#1| 1) (<= |ULTIMATE.start_main_~var_52_arg_0~0#1| 1) (<= 512 |ULTIMATE.start_main_~msb_SORT_202~0#1|) (<= |ULTIMATE.start_main_~msb_SORT_220~0#1| 262144) (<= 0 |ULTIMATE.start_main_~var_401~0#1|) (<= |ULTIMATE.start_main_~mask_SORT_212~0#1| 32767) (<= 8191 |ULTIMATE.start_main_~mask_SORT_208~0#1|) (<= 0 (+ |ULTIMATE.start_main_~mask_SORT_216~0#1| 1)) (<= 0 |ULTIMATE.start_main_~#state_15~0#1.base|) (<= |ULTIMATE.start_main_~msb_SORT_238~0#1| 134217728) (<= 1073741824 |ULTIMATE.start_main_~msb_SORT_244~0#1|) (<= |ULTIMATE.start_main_~msb_SORT_218~0#1| 131072) (<= |ULTIMATE.start_main_~msb_SORT_19~0#1| 4) (<= 0 |#StackHeapBarrier|) (<= 524288 |ULTIMATE.start_main_~msb_SORT_222~0#1|) (<= |ULTIMATE.start_main_~var_94_arg_0~0#1| 1) (<= |ULTIMATE.start_main_~var_63_arg_1~0#1| 0) (<= 0 |ULTIMATE.start_main_~var_38_arg_1~0#1|) (<= (+ |ULTIMATE.start_main_~mask_SORT_244~0#1| 1) 0) (<= 1 |ULTIMATE.start_main_~var_70_arg_0~0#1|) (<= 0 (+ |ULTIMATE.start_main_~mask_SORT_218~0#1| 1)) (<= 3 |ULTIMATE.start_main_~var_513~0#1|) (<= 1 |ULTIMATE.start_main_~var_531~0#1|) (<= |ULTIMATE.start_main_~mask_SORT_1~0#1| 1) (<= 0 (+ |ULTIMATE.start_main_~mask_SORT_230~0#1| 1)) (<= 65536 |ULTIMATE.start_main_~msb_SORT_216~0#1|) (<= 0 |ULTIMATE.start_main_~var_56~0#1|) (<= (+ |ULTIMATE.start_main_~mask_SORT_234~0#1| 1) 0) (<= |ULTIMATE.start_main_~msb_SORT_195~0#1| 32) (<= |ULTIMATE.start_main_~msb_SORT_244~0#1| 1073741824) (<= 0 |ULTIMATE.start_main_~var_16_arg_0~0#1.base|) (<= |ULTIMATE.start_main_~var_70_arg_0~0#1| 1) (<= |ULTIMATE.start_main_~var_63_arg_2~0#1| 1) (<= 1 |ULTIMATE.start_main_~var_89_arg_0~0#1|))' at error location [2022-12-14 09:25:45,154 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 09:25:45,154 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 09:25:45,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 4] total 8 [2022-12-14 09:25:45,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070533221] [2022-12-14 09:25:45,155 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 09:25:45,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 09:25:45,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:25:45,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 09:25:45,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=490, Unknown=0, NotChecked=0, Total=650 [2022-12-14 09:25:45,157 INFO L87 Difference]: Start difference. First operand 39 states and 61 transitions. Second operand has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-12-14 09:25:45,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:25:45,957 INFO L93 Difference]: Finished difference Result 78 states and 124 transitions. [2022-12-14 09:25:45,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 09:25:45,957 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 30 [2022-12-14 09:25:45,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:25:45,958 INFO L225 Difference]: With dead ends: 78 [2022-12-14 09:25:45,958 INFO L226 Difference]: Without dead ends: 42 [2022-12-14 09:25:45,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 21.4s TimeCoverageRelationStatistics Valid=168, Invalid=534, Unknown=0, NotChecked=0, Total=702 [2022-12-14 09:25:45,959 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-14 09:25:45,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 60 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-12-14 09:25:45,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-12-14 09:25:45,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2022-12-14 09:25:45,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 35 states have (on average 1.542857142857143) internal successors, (54), 35 states have internal predecessors, (54), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-12-14 09:25:45,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 64 transitions. [2022-12-14 09:25:45,965 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 64 transitions. Word has length 30 [2022-12-14 09:25:45,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:25:45,965 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 64 transitions. [2022-12-14 09:25:45,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-12-14 09:25:45,966 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 64 transitions. [2022-12-14 09:25:45,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-12-14 09:25:45,966 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:25:45,967 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:25:45,974 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 09:25:46,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:25:46,168 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:25:46,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:25:46,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1309371549, now seen corresponding path program 2 times [2022-12-14 09:25:46,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:25:46,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269201986] [2022-12-14 09:25:46,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:25:46,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:25:46,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:25:46,427 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-12-14 09:25:46,427 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:25:46,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269201986] [2022-12-14 09:25:46,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269201986] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 09:25:46,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1977086978] [2022-12-14 09:25:46,428 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 09:25:46,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:25:46,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:25:46,429 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:25:46,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 09:25:47,174 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-12-14 09:25:47,175 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 09:25:47,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 603 conjuncts, 32 conjunts are in the unsatisfiable core [2022-12-14 09:25:47,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:25:47,605 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-12-14 09:25:47,606 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 09:25:47,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1977086978] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:25:47,606 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 09:25:47,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2022-12-14 09:25:47,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439423921] [2022-12-14 09:25:47,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:25:47,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 09:25:47,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:25:47,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 09:25:47,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-14 09:25:47,607 INFO L87 Difference]: Start difference. First operand 42 states and 64 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-12-14 09:25:48,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:25:48,844 INFO L93 Difference]: Finished difference Result 83 states and 130 transitions. [2022-12-14 09:25:48,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 09:25:48,844 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 33 [2022-12-14 09:25:48,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:25:48,845 INFO L225 Difference]: With dead ends: 83 [2022-12-14 09:25:48,845 INFO L226 Difference]: Without dead ends: 81 [2022-12-14 09:25:48,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-12-14 09:25:48,846 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 152 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-12-14 09:25:48,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 71 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-12-14 09:25:48,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-12-14 09:25:48,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 54. [2022-12-14 09:25:48,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 42 states have (on average 1.4523809523809523) internal successors, (61), 42 states have internal predecessors, (61), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-12-14 09:25:48,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 81 transitions. [2022-12-14 09:25:48,855 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 81 transitions. Word has length 33 [2022-12-14 09:25:48,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:25:48,856 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 81 transitions. [2022-12-14 09:25:48,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-12-14 09:25:48,856 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 81 transitions. [2022-12-14 09:25:48,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-12-14 09:25:48,857 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:25:48,857 INFO L195 NwaCegarLoop]: trace histogram [10, 4, 2, 2, 2, 2, 2, 2, 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] [2022-12-14 09:25:48,864 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 09:25:49,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:25:49,059 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:25:49,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:25:49,060 INFO L85 PathProgramCache]: Analyzing trace with hash -590809255, now seen corresponding path program 1 times [2022-12-14 09:25:49,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:25:49,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637361699] [2022-12-14 09:25:49,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:25:49,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:25:49,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:25:49,687 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-12-14 09:25:49,688 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:25:49,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637361699] [2022-12-14 09:25:49,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637361699] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 09:25:49,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1210297295] [2022-12-14 09:25:49,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:25:49,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:25:49,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:25:49,689 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:25:49,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 09:25:50,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:25:50,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 2722 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 09:25:50,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:25:50,476 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 62 proven. 1 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-12-14 09:25:50,476 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 09:25:50,502 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-12-14 09:25:50,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1210297295] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-14 09:25:50,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-14 09:25:50,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2022-12-14 09:25:50,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416146272] [2022-12-14 09:25:50,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:25:50,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 09:25:50,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:25:50,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 09:25:50,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 09:25:50,504 INFO L87 Difference]: Start difference. First operand 54 states and 81 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-14 09:25:51,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:25:51,544 INFO L93 Difference]: Finished difference Result 87 states and 134 transitions. [2022-12-14 09:25:51,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 09:25:51,544 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 71 [2022-12-14 09:25:51,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:25:51,545 INFO L225 Difference]: With dead ends: 87 [2022-12-14 09:25:51,545 INFO L226 Difference]: Without dead ends: 55 [2022-12-14 09:25:51,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 09:25:51,545 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-12-14 09:25:51,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 39 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-12-14 09:25:51,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-12-14 09:25:51,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2022-12-14 09:25:51,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 43 states have (on average 1.441860465116279) internal successors, (62), 43 states have internal predecessors, (62), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-12-14 09:25:51,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 82 transitions. [2022-12-14 09:25:51,551 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 82 transitions. Word has length 71 [2022-12-14 09:25:51,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:25:51,552 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 82 transitions. [2022-12-14 09:25:51,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-14 09:25:51,552 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 82 transitions. [2022-12-14 09:25:51,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-12-14 09:25:51,553 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:25:51,553 INFO L195 NwaCegarLoop]: trace histogram [10, 4, 2, 2, 2, 2, 2, 2, 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, 1] [2022-12-14 09:25:51,564 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-14 09:25:51,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-14 09:25:51,754 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:25:51,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:25:51,756 INFO L85 PathProgramCache]: Analyzing trace with hash 151089609, now seen corresponding path program 1 times [2022-12-14 09:25:51,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:25:51,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875785889] [2022-12-14 09:25:51,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:25:51,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:25:51,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:25:52,373 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-12-14 09:25:52,373 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:25:52,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875785889] [2022-12-14 09:25:52,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875785889] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 09:25:52,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [670139189] [2022-12-14 09:25:52,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:25:52,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:25:52,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:25:52,375 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:25:52,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 09:25:53,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:25:53,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 2729 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 09:25:53,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:25:53,087 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 62 proven. 1 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-12-14 09:25:53,087 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 09:25:53,107 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2022-12-14 09:25:53,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [670139189] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-14 09:25:53,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-14 09:25:53,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2022-12-14 09:25:53,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554134929] [2022-12-14 09:25:53,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:25:53,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 09:25:53,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:25:53,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 09:25:53,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 09:25:53,109 INFO L87 Difference]: Start difference. First operand 55 states and 82 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-14 09:25:53,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:25:53,613 INFO L93 Difference]: Finished difference Result 89 states and 136 transitions. [2022-12-14 09:25:53,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 09:25:53,613 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 72 [2022-12-14 09:25:53,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:25:53,614 INFO L225 Difference]: With dead ends: 89 [2022-12-14 09:25:53,614 INFO L226 Difference]: Without dead ends: 56 [2022-12-14 09:25:53,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 09:25:53,615 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 09:25:53,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-14 09:25:53,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-12-14 09:25:53,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2022-12-14 09:25:53,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 44 states have (on average 1.4318181818181819) internal successors, (63), 44 states have internal predecessors, (63), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-12-14 09:25:53,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 83 transitions. [2022-12-14 09:25:53,621 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 83 transitions. Word has length 72 [2022-12-14 09:25:53,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:25:53,621 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 83 transitions. [2022-12-14 09:25:53,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-14 09:25:53,621 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 83 transitions. [2022-12-14 09:25:53,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-12-14 09:25:53,622 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:25:53,622 INFO L195 NwaCegarLoop]: trace histogram [10, 4, 2, 2, 2, 2, 2, 2, 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, 1, 1] [2022-12-14 09:25:53,633 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-14 09:25:53,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:25:53,824 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:25:53,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:25:53,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1003971875, now seen corresponding path program 1 times [2022-12-14 09:25:53,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:25:53,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139256998] [2022-12-14 09:25:53,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:25:53,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:25:53,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:25:54,384 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2022-12-14 09:25:54,384 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:25:54,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139256998] [2022-12-14 09:25:54,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139256998] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 09:25:54,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [906924273] [2022-12-14 09:25:54,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:25:54,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:25:54,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:25:54,386 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:25:54,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 09:25:55,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:25:55,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 2736 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 09:25:55,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:25:55,077 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 62 proven. 1 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-12-14 09:25:55,078 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 09:25:55,098 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2022-12-14 09:25:55,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [906924273] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-14 09:25:55,098 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-14 09:25:55,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2022-12-14 09:25:55,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117966445] [2022-12-14 09:25:55,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:25:55,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 09:25:55,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:25:55,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 09:25:55,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 09:25:55,100 INFO L87 Difference]: Start difference. First operand 56 states and 83 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-14 09:25:55,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:25:55,540 INFO L93 Difference]: Finished difference Result 91 states and 138 transitions. [2022-12-14 09:25:55,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 09:25:55,540 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 73 [2022-12-14 09:25:55,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:25:55,541 INFO L225 Difference]: With dead ends: 91 [2022-12-14 09:25:55,541 INFO L226 Difference]: Without dead ends: 57 [2022-12-14 09:25:55,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 09:25:55,542 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 09:25:55,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 09:25:55,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-12-14 09:25:55,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2022-12-14 09:25:55,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 45 states have (on average 1.4222222222222223) internal successors, (64), 45 states have internal predecessors, (64), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-12-14 09:25:55,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 84 transitions. [2022-12-14 09:25:55,547 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 84 transitions. Word has length 73 [2022-12-14 09:25:55,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:25:55,548 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 84 transitions. [2022-12-14 09:25:55,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-14 09:25:55,548 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 84 transitions. [2022-12-14 09:25:55,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-12-14 09:25:55,548 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:25:55,548 INFO L195 NwaCegarLoop]: trace histogram [10, 4, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1] [2022-12-14 09:25:55,559 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-14 09:25:55,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:25:55,750 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:25:55,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:25:55,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1179685386, now seen corresponding path program 1 times [2022-12-14 09:25:55,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:25:55,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918644495] [2022-12-14 09:25:55,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:25:55,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:25:55,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:25:56,307 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2022-12-14 09:25:56,308 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:25:56,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918644495] [2022-12-14 09:25:56,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918644495] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 09:25:56,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497988738] [2022-12-14 09:25:56,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:25:56,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:25:56,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:25:56,309 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:25:56,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-14 09:25:57,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:25:57,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 2743 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 09:25:57,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:25:57,045 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 62 proven. 1 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-12-14 09:25:57,046 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 09:25:57,068 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2022-12-14 09:25:57,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1497988738] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-14 09:25:57,068 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-14 09:25:57,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2022-12-14 09:25:57,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432548278] [2022-12-14 09:25:57,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:25:57,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 09:25:57,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:25:57,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 09:25:57,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 09:25:57,070 INFO L87 Difference]: Start difference. First operand 57 states and 84 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-14 09:25:57,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:25:57,771 INFO L93 Difference]: Finished difference Result 93 states and 140 transitions. [2022-12-14 09:25:57,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 09:25:57,771 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 74 [2022-12-14 09:25:57,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:25:57,772 INFO L225 Difference]: With dead ends: 93 [2022-12-14 09:25:57,772 INFO L226 Difference]: Without dead ends: 58 [2022-12-14 09:25:57,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 09:25:57,773 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-14 09:25:57,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-14 09:25:57,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-12-14 09:25:57,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2022-12-14 09:25:57,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 46 states have (on average 1.4130434782608696) internal successors, (65), 46 states have internal predecessors, (65), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-12-14 09:25:57,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 85 transitions. [2022-12-14 09:25:57,782 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 85 transitions. Word has length 74 [2022-12-14 09:25:57,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:25:57,782 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 85 transitions. [2022-12-14 09:25:57,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-14 09:25:57,782 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 85 transitions. [2022-12-14 09:25:57,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-12-14 09:25:57,783 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:25:57,783 INFO L195 NwaCegarLoop]: trace histogram [10, 4, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1] [2022-12-14 09:25:57,794 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-14 09:25:57,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:25:57,985 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:25:57,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:25:57,986 INFO L85 PathProgramCache]: Analyzing trace with hash -464319361, now seen corresponding path program 1 times [2022-12-14 09:25:57,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:25:57,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488421978] [2022-12-14 09:25:57,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:25:57,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:25:58,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:25:58,520 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2022-12-14 09:25:58,520 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:25:58,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488421978] [2022-12-14 09:25:58,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488421978] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 09:25:58,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [749659136] [2022-12-14 09:25:58,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:25:58,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:25:58,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:25:58,521 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:25:58,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-14 09:25:59,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:25:59,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 2750 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 09:25:59,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:25:59,372 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 62 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-12-14 09:25:59,372 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 09:25:59,388 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2022-12-14 09:25:59,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [749659136] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-14 09:25:59,389 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-14 09:25:59,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2022-12-14 09:25:59,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168595908] [2022-12-14 09:25:59,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:25:59,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 09:25:59,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:25:59,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 09:25:59,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 09:25:59,390 INFO L87 Difference]: Start difference. First operand 58 states and 85 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-14 09:25:59,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:25:59,998 INFO L93 Difference]: Finished difference Result 95 states and 142 transitions. [2022-12-14 09:25:59,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 09:25:59,998 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 75 [2022-12-14 09:25:59,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:25:59,999 INFO L225 Difference]: With dead ends: 95 [2022-12-14 09:25:59,999 INFO L226 Difference]: Without dead ends: 59 [2022-12-14 09:25:59,999 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 09:26:00,000 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-14 09:26:00,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-14 09:26:00,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-12-14 09:26:00,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2022-12-14 09:26:00,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 47 states have (on average 1.4042553191489362) internal successors, (66), 47 states have internal predecessors, (66), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-12-14 09:26:00,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 86 transitions. [2022-12-14 09:26:00,005 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 86 transitions. Word has length 75 [2022-12-14 09:26:00,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:26:00,005 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 86 transitions. [2022-12-14 09:26:00,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-14 09:26:00,006 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 86 transitions. [2022-12-14 09:26:00,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-12-14 09:26:00,006 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:26:00,006 INFO L195 NwaCegarLoop]: trace histogram [10, 4, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1] [2022-12-14 09:26:00,017 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-14 09:26:00,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-14 09:26:00,208 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:26:00,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:26:00,209 INFO L85 PathProgramCache]: Analyzing trace with hash 995061736, now seen corresponding path program 1 times [2022-12-14 09:26:00,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:26:00,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410529508] [2022-12-14 09:26:00,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:26:00,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:26:00,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:26:00,740 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2022-12-14 09:26:00,740 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:26:00,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410529508] [2022-12-14 09:26:00,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410529508] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 09:26:00,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040486476] [2022-12-14 09:26:00,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:26:00,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:26:00,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:26:00,741 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:26:00,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-14 09:26:01,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:26:01,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 2757 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 09:26:01,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:26:01,450 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 62 proven. 4 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-12-14 09:26:01,450 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 09:26:01,473 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2022-12-14 09:26:01,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1040486476] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-14 09:26:01,473 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-14 09:26:01,473 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2022-12-14 09:26:01,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71836296] [2022-12-14 09:26:01,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:26:01,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 09:26:01,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:26:01,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 09:26:01,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-14 09:26:01,475 INFO L87 Difference]: Start difference. First operand 59 states and 86 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-14 09:26:02,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:26:02,259 INFO L93 Difference]: Finished difference Result 97 states and 144 transitions. [2022-12-14 09:26:02,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 09:26:02,259 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 76 [2022-12-14 09:26:02,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:26:02,260 INFO L225 Difference]: With dead ends: 97 [2022-12-14 09:26:02,260 INFO L226 Difference]: Without dead ends: 60 [2022-12-14 09:26:02,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-14 09:26:02,260 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-14 09:26:02,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-12-14 09:26:02,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-12-14 09:26:02,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2022-12-14 09:26:02,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 48 states have (on average 1.3958333333333333) internal successors, (67), 48 states have internal predecessors, (67), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-12-14 09:26:02,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 87 transitions. [2022-12-14 09:26:02,266 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 87 transitions. Word has length 76 [2022-12-14 09:26:02,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:26:02,266 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 87 transitions. [2022-12-14 09:26:02,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-14 09:26:02,266 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 87 transitions. [2022-12-14 09:26:02,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-12-14 09:26:02,266 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:26:02,267 INFO L195 NwaCegarLoop]: trace histogram [10, 4, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1] [2022-12-14 09:26:02,277 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-12-14 09:26:02,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:26:02,467 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:26:02,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:26:02,468 INFO L85 PathProgramCache]: Analyzing trace with hash -950987365, now seen corresponding path program 1 times [2022-12-14 09:26:02,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:26:02,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109602700] [2022-12-14 09:26:02,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:26:02,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:26:02,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:26:03,007 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2022-12-14 09:26:03,007 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:26:03,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109602700] [2022-12-14 09:26:03,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109602700] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 09:26:03,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288604732] [2022-12-14 09:26:03,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:26:03,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:26:03,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:26:03,009 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:26:03,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-14 09:26:03,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:26:03,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 2764 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 09:26:03,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:26:03,721 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 62 proven. 4 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-12-14 09:26:03,721 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 09:26:03,739 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2022-12-14 09:26:03,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [288604732] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-14 09:26:03,739 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-14 09:26:03,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2022-12-14 09:26:03,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015048120] [2022-12-14 09:26:03,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:26:03,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 09:26:03,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:26:03,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 09:26:03,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-14 09:26:03,741 INFO L87 Difference]: Start difference. First operand 60 states and 87 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-14 09:26:04,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:26:04,125 INFO L93 Difference]: Finished difference Result 99 states and 146 transitions. [2022-12-14 09:26:04,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 09:26:04,125 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 77 [2022-12-14 09:26:04,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:26:04,126 INFO L225 Difference]: With dead ends: 99 [2022-12-14 09:26:04,126 INFO L226 Difference]: Without dead ends: 61 [2022-12-14 09:26:04,126 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-14 09:26:04,127 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 09:26:04,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 09:26:04,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-12-14 09:26:04,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2022-12-14 09:26:04,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 49 states have (on average 1.3877551020408163) internal successors, (68), 49 states have internal predecessors, (68), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-12-14 09:26:04,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 88 transitions. [2022-12-14 09:26:04,136 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 88 transitions. Word has length 77 [2022-12-14 09:26:04,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:26:04,136 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 88 transitions. [2022-12-14 09:26:04,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-14 09:26:04,136 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 88 transitions. [2022-12-14 09:26:04,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-12-14 09:26:04,137 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:26:04,137 INFO L195 NwaCegarLoop]: trace histogram [10, 4, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:26:04,147 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-14 09:26:04,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:26:04,338 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:26:04,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:26:04,339 INFO L85 PathProgramCache]: Analyzing trace with hash 697126287, now seen corresponding path program 1 times [2022-12-14 09:26:04,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:26:04,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130561884] [2022-12-14 09:26:04,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:26:04,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:26:04,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:26:04,932 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2022-12-14 09:26:04,932 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:26:04,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130561884] [2022-12-14 09:26:04,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130561884] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 09:26:04,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623923709] [2022-12-14 09:26:04,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:26:04,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:26:04,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:26:04,934 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:26:04,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-14 09:26:05,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:26:05,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 2771 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 09:26:05,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:26:05,827 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 62 proven. 4 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-12-14 09:26:05,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 09:26:05,851 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2022-12-14 09:26:05,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [623923709] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-14 09:26:05,851 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-14 09:26:05,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2022-12-14 09:26:05,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989256062] [2022-12-14 09:26:05,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:26:05,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 09:26:05,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:26:05,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 09:26:05,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-14 09:26:05,852 INFO L87 Difference]: Start difference. First operand 61 states and 88 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-14 09:26:06,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:26:06,297 INFO L93 Difference]: Finished difference Result 101 states and 148 transitions. [2022-12-14 09:26:06,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 09:26:06,297 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 78 [2022-12-14 09:26:06,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:26:06,298 INFO L225 Difference]: With dead ends: 101 [2022-12-14 09:26:06,298 INFO L226 Difference]: Without dead ends: 62 [2022-12-14 09:26:06,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-14 09:26:06,298 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 09:26:06,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 09:26:06,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-12-14 09:26:06,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2022-12-14 09:26:06,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 50 states have (on average 1.38) internal successors, (69), 50 states have internal predecessors, (69), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-12-14 09:26:06,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 89 transitions. [2022-12-14 09:26:06,304 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 89 transitions. Word has length 78 [2022-12-14 09:26:06,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:26:06,304 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 89 transitions. [2022-12-14 09:26:06,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-14 09:26:06,304 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 89 transitions. [2022-12-14 09:26:06,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-12-14 09:26:06,305 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:26:06,305 INFO L195 NwaCegarLoop]: trace histogram [10, 4, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:26:06,316 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-12-14 09:26:06,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-14 09:26:06,505 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:26:06,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:26:06,506 INFO L85 PathProgramCache]: Analyzing trace with hash 811801261, now seen corresponding path program 1 times [2022-12-14 09:26:06,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:26:06,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465416455] [2022-12-14 09:26:06,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:26:06,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:26:06,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:26:07,043 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2022-12-14 09:26:07,043 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:26:07,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465416455] [2022-12-14 09:26:07,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465416455] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 09:26:07,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1935521674] [2022-12-14 09:26:07,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:26:07,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:26:07,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:26:07,045 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:26:07,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-14 09:26:07,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:26:07,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 2778 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 09:26:07,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:26:07,865 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 62 proven. 4 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-12-14 09:26:07,865 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 09:26:07,883 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2022-12-14 09:26:07,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1935521674] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-14 09:26:07,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-14 09:26:07,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2022-12-14 09:26:07,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752602865] [2022-12-14 09:26:07,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:26:07,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 09:26:07,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:26:07,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 09:26:07,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-14 09:26:07,885 INFO L87 Difference]: Start difference. First operand 62 states and 89 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-14 09:26:08,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:26:08,370 INFO L93 Difference]: Finished difference Result 103 states and 150 transitions. [2022-12-14 09:26:08,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 09:26:08,371 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 79 [2022-12-14 09:26:08,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:26:08,371 INFO L225 Difference]: With dead ends: 103 [2022-12-14 09:26:08,371 INFO L226 Difference]: Without dead ends: 63 [2022-12-14 09:26:08,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-14 09:26:08,372 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 09:26:08,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-14 09:26:08,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-12-14 09:26:08,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2022-12-14 09:26:08,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 51 states have (on average 1.3725490196078431) internal successors, (70), 51 states have internal predecessors, (70), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-12-14 09:26:08,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 90 transitions. [2022-12-14 09:26:08,377 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 90 transitions. Word has length 79 [2022-12-14 09:26:08,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:26:08,377 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 90 transitions. [2022-12-14 09:26:08,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-14 09:26:08,377 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 90 transitions. [2022-12-14 09:26:08,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-12-14 09:26:08,377 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:26:08,378 INFO L195 NwaCegarLoop]: trace histogram [10, 4, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:26:08,389 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-12-14 09:26:08,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-14 09:26:08,579 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:26:08,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:26:08,580 INFO L85 PathProgramCache]: Analyzing trace with hash 33028752, now seen corresponding path program 1 times [2022-12-14 09:26:08,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:26:08,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86941388] [2022-12-14 09:26:08,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:26:08,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:26:08,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:26:09,091 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2022-12-14 09:26:09,091 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:26:09,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86941388] [2022-12-14 09:26:09,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86941388] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 09:26:09,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [322411693] [2022-12-14 09:26:09,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:26:09,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:26:09,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:26:09,092 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:26:09,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-14 09:26:09,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:26:09,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 2785 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 09:26:09,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:26:09,864 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 62 proven. 4 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-12-14 09:26:09,865 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 09:26:09,885 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2022-12-14 09:26:09,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [322411693] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-14 09:26:09,885 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-14 09:26:09,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2022-12-14 09:26:09,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691914157] [2022-12-14 09:26:09,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:26:09,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 09:26:09,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:26:09,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 09:26:09,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-14 09:26:09,886 INFO L87 Difference]: Start difference. First operand 63 states and 90 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-14 09:26:10,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:26:10,910 INFO L93 Difference]: Finished difference Result 105 states and 152 transitions. [2022-12-14 09:26:10,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 09:26:10,910 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 80 [2022-12-14 09:26:10,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:26:10,911 INFO L225 Difference]: With dead ends: 105 [2022-12-14 09:26:10,911 INFO L226 Difference]: Without dead ends: 64 [2022-12-14 09:26:10,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-14 09:26:10,911 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-12-14 09:26:10,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-12-14 09:26:10,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-12-14 09:26:10,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2022-12-14 09:26:10,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 52 states have (on average 1.3653846153846154) internal successors, (71), 52 states have internal predecessors, (71), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-12-14 09:26:10,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 91 transitions. [2022-12-14 09:26:10,916 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 91 transitions. Word has length 80 [2022-12-14 09:26:10,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:26:10,916 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 91 transitions. [2022-12-14 09:26:10,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-14 09:26:10,917 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 91 transitions. [2022-12-14 09:26:10,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-12-14 09:26:10,917 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:26:10,917 INFO L195 NwaCegarLoop]: trace histogram [10, 4, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:26:10,928 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-12-14 09:26:11,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-14 09:26:11,118 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:26:11,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:26:11,119 INFO L85 PathProgramCache]: Analyzing trace with hash 2033322741, now seen corresponding path program 1 times [2022-12-14 09:26:11,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:26:11,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078018175] [2022-12-14 09:26:11,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:26:11,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:26:11,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:26:11,642 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2022-12-14 09:26:11,642 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:26:11,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078018175] [2022-12-14 09:26:11,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078018175] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 09:26:11,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [329555668] [2022-12-14 09:26:11,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:26:11,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:26:11,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:26:11,644 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:26:11,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-12-14 09:26:12,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:26:12,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 2792 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 09:26:12,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:26:12,608 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 62 proven. 4 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-12-14 09:26:12,608 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 09:26:12,628 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-12-14 09:26:12,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [329555668] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-14 09:26:12,629 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-14 09:26:12,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2022-12-14 09:26:12,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537239143] [2022-12-14 09:26:12,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:26:12,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 09:26:12,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:26:12,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 09:26:12,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-14 09:26:12,630 INFO L87 Difference]: Start difference. First operand 64 states and 91 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-14 09:26:13,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:26:13,150 INFO L93 Difference]: Finished difference Result 107 states and 154 transitions. [2022-12-14 09:26:13,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 09:26:13,151 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 81 [2022-12-14 09:26:13,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:26:13,151 INFO L225 Difference]: With dead ends: 107 [2022-12-14 09:26:13,151 INFO L226 Difference]: Without dead ends: 65 [2022-12-14 09:26:13,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-14 09:26:13,152 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 09:26:13,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-14 09:26:13,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-12-14 09:26:13,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2022-12-14 09:26:13,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 53 states have (on average 1.3584905660377358) internal successors, (72), 53 states have internal predecessors, (72), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-12-14 09:26:13,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 92 transitions. [2022-12-14 09:26:13,157 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 92 transitions. Word has length 81 [2022-12-14 09:26:13,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:26:13,157 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 92 transitions. [2022-12-14 09:26:13,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-14 09:26:13,157 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 92 transitions. [2022-12-14 09:26:13,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-12-14 09:26:13,157 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:26:13,158 INFO L195 NwaCegarLoop]: trace histogram [10, 4, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:26:13,169 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-12-14 09:26:13,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-14 09:26:13,359 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:26:13,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:26:13,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1531764947, now seen corresponding path program 1 times [2022-12-14 09:26:13,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:26:13,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758361406] [2022-12-14 09:26:13,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:26:13,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:26:13,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:26:13,894 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-12-14 09:26:13,894 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:26:13,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758361406] [2022-12-14 09:26:13,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758361406] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 09:26:13,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1886973981] [2022-12-14 09:26:13,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:26:13,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:26:13,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:26:13,895 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:26:13,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-12-14 09:26:14,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:26:14,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 2799 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 09:26:14,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:26:14,857 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 62 proven. 4 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-12-14 09:26:14,857 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 09:26:14,875 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-12-14 09:26:14,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1886973981] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-14 09:26:14,876 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-14 09:26:14,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2022-12-14 09:26:14,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708740443] [2022-12-14 09:26:14,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:26:14,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 09:26:14,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:26:14,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 09:26:14,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-14 09:26:14,877 INFO L87 Difference]: Start difference. First operand 65 states and 92 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-14 09:26:15,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:26:15,273 INFO L93 Difference]: Finished difference Result 109 states and 156 transitions. [2022-12-14 09:26:15,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 09:26:15,274 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 82 [2022-12-14 09:26:15,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:26:15,274 INFO L225 Difference]: With dead ends: 109 [2022-12-14 09:26:15,274 INFO L226 Difference]: Without dead ends: 66 [2022-12-14 09:26:15,274 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-14 09:26:15,275 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 09:26:15,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 09:26:15,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-12-14 09:26:15,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2022-12-14 09:26:15,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 54 states have (on average 1.3518518518518519) internal successors, (73), 54 states have internal predecessors, (73), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-12-14 09:26:15,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 93 transitions. [2022-12-14 09:26:15,291 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 93 transitions. Word has length 82 [2022-12-14 09:26:15,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:26:15,292 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 93 transitions. [2022-12-14 09:26:15,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-14 09:26:15,292 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 93 transitions. [2022-12-14 09:26:15,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-12-14 09:26:15,292 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:26:15,292 INFO L195 NwaCegarLoop]: trace histogram [10, 4, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:26:15,304 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-12-14 09:26:15,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-14 09:26:15,494 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:26:15,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:26:15,495 INFO L85 PathProgramCache]: Analyzing trace with hash 780025683, now seen corresponding path program 1 times [2022-12-14 09:26:15,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:26:15,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42032779] [2022-12-14 09:26:15,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:26:15,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:26:15,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:26:15,982 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2022-12-14 09:26:15,983 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:26:15,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42032779] [2022-12-14 09:26:15,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42032779] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 09:26:15,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957338216] [2022-12-14 09:26:15,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:26:15,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:26:15,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:26:15,984 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:26:15,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-12-14 09:26:16,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:26:16,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 2806 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 09:26:16,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:26:16,860 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 62 proven. 1 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-12-14 09:26:16,860 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 09:26:16,882 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-12-14 09:26:16,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [957338216] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-14 09:26:16,882 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-14 09:26:16,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2022-12-14 09:26:16,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170895141] [2022-12-14 09:26:16,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:26:16,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 09:26:16,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:26:16,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 09:26:16,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 09:26:16,883 INFO L87 Difference]: Start difference. First operand 66 states and 93 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-14 09:26:18,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:26:18,014 INFO L93 Difference]: Finished difference Result 111 states and 158 transitions. [2022-12-14 09:26:18,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 09:26:18,015 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 83 [2022-12-14 09:26:18,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:26:18,015 INFO L225 Difference]: With dead ends: 111 [2022-12-14 09:26:18,015 INFO L226 Difference]: Without dead ends: 67 [2022-12-14 09:26:18,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 09:26:18,016 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-12-14 09:26:18,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-12-14 09:26:18,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-12-14 09:26:18,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2022-12-14 09:26:18,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 55 states have (on average 1.3454545454545455) internal successors, (74), 55 states have internal predecessors, (74), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-12-14 09:26:18,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 94 transitions. [2022-12-14 09:26:18,024 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 94 transitions. Word has length 83 [2022-12-14 09:26:18,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:26:18,025 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 94 transitions. [2022-12-14 09:26:18,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-14 09:26:18,025 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 94 transitions. [2022-12-14 09:26:18,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-12-14 09:26:18,025 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:26:18,026 INFO L195 NwaCegarLoop]: trace histogram [10, 4, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:26:18,037 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-12-14 09:26:18,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:26:18,227 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:26:18,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:26:18,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1336913741, now seen corresponding path program 1 times [2022-12-14 09:26:18,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:26:18,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057666319] [2022-12-14 09:26:18,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:26:18,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:26:18,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:26:18,787 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-12-14 09:26:18,787 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:26:18,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057666319] [2022-12-14 09:26:18,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057666319] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 09:26:18,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [441941442] [2022-12-14 09:26:18,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:26:18,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:26:18,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:26:18,788 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:26:18,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-12-14 09:26:19,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:26:19,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 2813 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 09:26:19,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:26:19,639 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 62 proven. 4 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-12-14 09:26:19,640 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 09:26:19,660 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2022-12-14 09:26:19,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [441941442] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-14 09:26:19,660 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-14 09:26:19,660 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2022-12-14 09:26:19,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628896219] [2022-12-14 09:26:19,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:26:19,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 09:26:19,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:26:19,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 09:26:19,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-14 09:26:19,662 INFO L87 Difference]: Start difference. First operand 67 states and 94 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-14 09:26:20,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:26:20,135 INFO L93 Difference]: Finished difference Result 113 states and 160 transitions. [2022-12-14 09:26:20,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 09:26:20,135 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 84 [2022-12-14 09:26:20,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:26:20,136 INFO L225 Difference]: With dead ends: 113 [2022-12-14 09:26:20,136 INFO L226 Difference]: Without dead ends: 68 [2022-12-14 09:26:20,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-14 09:26:20,137 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 09:26:20,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-14 09:26:20,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-12-14 09:26:20,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2022-12-14 09:26:20,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 56 states have (on average 1.3392857142857142) internal successors, (75), 56 states have internal predecessors, (75), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-12-14 09:26:20,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 95 transitions. [2022-12-14 09:26:20,146 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 95 transitions. Word has length 84 [2022-12-14 09:26:20,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:26:20,147 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 95 transitions. [2022-12-14 09:26:20,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-14 09:26:20,147 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 95 transitions. [2022-12-14 09:26:20,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-12-14 09:26:20,148 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:26:20,148 INFO L195 NwaCegarLoop]: trace histogram [10, 4, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:26:20,162 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-12-14 09:26:20,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:26:20,349 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:26:20,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:26:20,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1169777751, now seen corresponding path program 1 times [2022-12-14 09:26:20,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:26:20,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7435050] [2022-12-14 09:26:20,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:26:20,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:26:20,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:26:20,943 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2022-12-14 09:26:20,943 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:26:20,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7435050] [2022-12-14 09:26:20,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7435050] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 09:26:20,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989581884] [2022-12-14 09:26:20,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:26:20,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:26:20,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:26:20,944 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:26:20,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-12-14 09:26:21,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:26:21,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 2820 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 09:26:21,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:26:21,860 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 62 proven. 4 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-12-14 09:26:21,860 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 09:26:21,882 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2022-12-14 09:26:21,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1989581884] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-14 09:26:21,882 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-14 09:26:21,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2022-12-14 09:26:21,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012505656] [2022-12-14 09:26:21,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:26:21,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 09:26:21,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:26:21,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 09:26:21,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-14 09:26:21,884 INFO L87 Difference]: Start difference. First operand 68 states and 95 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-14 09:26:22,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:26:22,324 INFO L93 Difference]: Finished difference Result 115 states and 162 transitions. [2022-12-14 09:26:22,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 09:26:22,325 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 85 [2022-12-14 09:26:22,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:26:22,326 INFO L225 Difference]: With dead ends: 115 [2022-12-14 09:26:22,326 INFO L226 Difference]: Without dead ends: 69 [2022-12-14 09:26:22,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-14 09:26:22,326 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 09:26:22,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 09:26:22,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-12-14 09:26:22,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2022-12-14 09:26:22,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 57 states have (on average 1.3333333333333333) internal successors, (76), 57 states have internal predecessors, (76), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-12-14 09:26:22,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 96 transitions. [2022-12-14 09:26:22,331 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 96 transitions. Word has length 85 [2022-12-14 09:26:22,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:26:22,331 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 96 transitions. [2022-12-14 09:26:22,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-14 09:26:22,331 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 96 transitions. [2022-12-14 09:26:22,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-12-14 09:26:22,332 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:26:22,332 INFO L195 NwaCegarLoop]: trace histogram [10, 4, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:26:22,344 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-12-14 09:26:22,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:26:22,533 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:26:22,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:26:22,534 INFO L85 PathProgramCache]: Analyzing trace with hash 164350877, now seen corresponding path program 1 times [2022-12-14 09:26:22,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:26:22,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143701752] [2022-12-14 09:26:22,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:26:22,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:26:22,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:26:23,085 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2022-12-14 09:26:23,085 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:26:23,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143701752] [2022-12-14 09:26:23,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143701752] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 09:26:23,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1257500788] [2022-12-14 09:26:23,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:26:23,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:26:23,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:26:23,087 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:26:23,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aab2a1dd-eb25-45b4-9831-7e5fc315ede0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-12-14 09:26:23,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:26:23,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 2827 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-14 09:26:23,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:26:23,942 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2022-12-14 09:26:23,942 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 09:26:23,979 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2022-12-14 09:26:23,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1257500788] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 09:26:23,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1652856983] [2022-12-14 09:26:23,984 INFO L159 IcfgInterpreter]: Started Sifa with 36 locations of interest [2022-12-14 09:26:23,984 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 09:26:23,984 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 09:26:23,984 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 09:26:23,984 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 09:26:24,044 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 09:26:24,073 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 17 [2022-12-14 09:26:24,133 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2022-12-14 09:26:24,475 INFO L321 Elim1Store]: treesize reduction 41, result has 26.8 percent of original size [2022-12-14 09:26:24,476 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 652 treesize of output 659 [2022-12-14 09:26:25,181 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 37 [2022-12-14 09:26:25,253 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-14 09:26:25,270 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 09:26:25,348 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2022-12-14 09:26:25,695 INFO L321 Elim1Store]: treesize reduction 41, result has 26.8 percent of original size [2022-12-14 09:26:25,696 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 492 treesize of output 499 [2022-12-14 09:26:26,282 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 37 [2022-12-14 09:26:26,431 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 09:26:26,453 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-14 09:26:26,688 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 37 [2022-12-14 09:26:27,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:26:27,178 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 96 [2022-12-14 09:26:27,407 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 37 [2022-12-14 09:26:33,018 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 09:26:33,194 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-14 09:26:33,811 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:26:33,836 INFO L321 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-12-14 09:26:33,836 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 27 [2022-12-14 09:26:35,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:26:35,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:26:35,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:26:35,220 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:26:35,221 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:26:35,248 INFO L321 Elim1Store]: treesize reduction 31, result has 29.5 percent of original size [2022-12-14 09:26:35,248 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 69 treesize of output 74 [2022-12-14 09:26:36,127 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:26:36,152 INFO L321 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-12-14 09:26:36,152 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 27 [2022-12-14 09:26:36,668 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-14 09:26:36,742 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 09:26:36,865 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-14 09:26:37,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:26:37,325 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:26:37,326 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:26:37,375 INFO L321 Elim1Store]: treesize reduction 38, result has 49.3 percent of original size [2022-12-14 09:26:37,375 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 50 treesize of output 67 [2022-12-14 09:26:39,426 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:26:39,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:26:39,629 INFO L321 Elim1Store]: treesize reduction 82, result has 58.6 percent of original size [2022-12-14 09:26:39,630 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 249 treesize of output 334 [2022-12-14 09:26:41,904 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:26:41,922 INFO L321 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-12-14 09:26:41,922 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 27 [2022-12-14 09:26:42,540 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 09:26:42,608 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-14 09:26:42,660 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-14 09:26:43,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:26:43,384 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:26:43,440 INFO L321 Elim1Store]: treesize reduction 84, result has 18.4 percent of original size [2022-12-14 09:26:43,440 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 38 treesize of output 43 [2022-12-14 09:26:45,722 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:26:45,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:26:45,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:26:45,728 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:26:46,017 INFO L321 Elim1Store]: treesize reduction 256, result has 29.3 percent of original size [2022-12-14 09:26:46,017 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 466 treesize of output 517 [2022-12-14 09:26:49,203 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:26:49,223 INFO L321 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-12-14 09:26:49,223 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 27 [2022-12-14 09:26:49,863 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-14 09:26:49,977 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-14 09:26:50,033 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 09:26:50,877 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:26:51,099 INFO L321 Elim1Store]: treesize reduction 152, result has 43.5 percent of original size [2022-12-14 09:26:51,099 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 49 treesize of output 133 [2022-12-14 09:26:54,008 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:26:54,259 INFO L321 Elim1Store]: treesize reduction 112, result has 67.0 percent of original size [2022-12-14 09:26:54,259 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 272 treesize of output 460 [2022-12-14 09:27:35,888 WARN L176 XnfTransformerHelper]: Simplifying disjunction of 7492 conjuctions. This might take some time... [2022-12-14 09:32:06,186 INFO L192 XnfTransformerHelper]: Simplified to disjunction of 7492 conjuctions. [2022-12-14 09:32:12,324 WARN L176 XnfTransformerHelper]: Simplifying disjunction of 7492 conjuctions. This might take some time... [2022-12-14 09:36:45,354 INFO L192 XnfTransformerHelper]: Simplified to disjunction of 7492 conjuctions. [2022-12-14 09:36:57,024 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:36:57,048 INFO L321 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-12-14 09:36:57,048 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 27 [2022-12-14 09:36:57,916 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-14 09:36:58,011 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 09:36:58,151 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-14 09:36:59,135 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:36:59,251 INFO L321 Elim1Store]: treesize reduction 108, result has 34.9 percent of original size [2022-12-14 09:36:59,251 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 71 [2022-12-14 09:37:02,374 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:37:02,571 INFO L321 Elim1Store]: treesize reduction 82, result has 62.4 percent of original size [2022-12-14 09:37:02,571 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 249 treesize of output 354 [2022-12-14 09:37:07,743 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:37:07,762 INFO L321 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-12-14 09:37:07,762 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 27 [2022-12-14 09:37:08,768 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-14 09:37:08,833 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 09:37:08,881 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-14 09:37:10,051 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:37:10,073 INFO L321 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-12-14 09:37:10,073 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 27 [2022-12-14 09:37:13,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:37:13,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:37:13,462 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:37:13,463 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:37:13,494 INFO L321 Elim1Store]: treesize reduction 31, result has 29.5 percent of original size [2022-12-14 09:37:13,495 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 69 treesize of output 74 [2022-12-14 09:37:15,387 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:37:15,413 INFO L321 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-12-14 09:37:15,413 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 27 [2022-12-14 09:37:18,206 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 09:37:18,447 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-14 09:37:18,665 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-14 09:37:20,443 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:37:20,474 INFO L321 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-12-14 09:37:20,474 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 27 [2022-12-14 09:37:25,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:37:25,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:37:25,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:37:25,228 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:37:25,228 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:37:25,260 INFO L321 Elim1Store]: treesize reduction 31, result has 29.5 percent of original size [2022-12-14 09:37:25,260 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 69 treesize of output 74 [2022-12-14 09:37:27,773 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:37:27,805 INFO L321 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-12-14 09:37:27,805 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 27 [2022-12-14 09:37:29,190 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-14 09:37:29,426 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-14 09:37:29,585 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 09:37:31,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:37:31,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:37:31,036 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:37:31,038 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:37:31,102 INFO L321 Elim1Store]: treesize reduction 38, result has 49.3 percent of original size [2022-12-14 09:37:31,103 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 50 treesize of output 67 [2022-12-14 09:37:37,160 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:37:37,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:37:37,420 INFO L321 Elim1Store]: treesize reduction 82, result has 58.6 percent of original size [2022-12-14 09:37:37,420 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 249 treesize of output 334 [2022-12-14 09:37:42,881 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:37:42,911 INFO L321 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-12-14 09:37:42,912 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 27 [2022-12-14 09:37:44,529 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-14 09:37:44,689 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 09:37:44,833 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-14 09:37:46,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:37:46,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:37:46,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:37:46,728 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:37:46,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:37:46,771 INFO L321 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-12-14 09:37:46,771 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 55 [2022-12-14 09:37:53,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:37:53,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:37:53,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:37:53,078 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:37:53,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:37:53,089 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:37:53,437 INFO L321 Elim1Store]: treesize reduction 218, result has 25.9 percent of original size [2022-12-14 09:37:53,438 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 485 treesize of output 520 [2022-12-14 09:37:56,961 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:37:56,989 INFO L321 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-12-14 09:37:56,989 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 27 [2022-12-14 09:37:58,562 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 09:37:58,775 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-14 09:37:59,112 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-14 09:38:00,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:38:00,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:38:00,793 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:38:00,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:38:00,828 INFO L321 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-12-14 09:38:00,828 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 55 [2022-12-14 09:38:08,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:38:08,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:38:08,175 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:38:08,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:38:08,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:38:08,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:38:08,187 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:38:08,356 INFO L321 Elim1Store]: treesize reduction 214, result has 14.4 percent of original size [2022-12-14 09:38:08,356 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 491 treesize of output 486 [2022-12-14 09:38:11,562 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:38:11,590 INFO L321 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-12-14 09:38:11,590 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 27 [2022-12-14 09:38:13,511 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-14 09:38:14,068 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-14 09:38:14,247 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 09:38:20,120 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:38:20,153 INFO L321 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-12-14 09:38:20,153 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 27 [2022-12-14 09:38:26,195 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:38:26,225 INFO L321 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-12-14 09:38:26,226 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 27 [2022-12-14 09:38:28,697 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-14 09:38:28,842 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 09:38:29,098 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-14 09:38:31,496 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:38:31,584 INFO L321 Elim1Store]: treesize reduction 138, result has 35.5 percent of original size [2022-12-14 09:38:31,585 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 50 treesize of output 95 [2022-12-14 09:38:39,887 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:38:40,083 INFO L321 Elim1Store]: treesize reduction 82, result has 62.4 percent of original size [2022-12-14 09:38:40,083 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 249 treesize of output 354 [2022-12-14 09:38:50,513 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:38:50,556 INFO L321 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-12-14 09:38:50,556 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 27 [2022-12-14 09:38:53,313 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-14 09:38:55,408 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:38:55,550 INFO L321 Elim1Store]: treesize reduction 52, result has 55.6 percent of original size [2022-12-14 09:38:55,550 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 81 [2022-12-14 09:38:59,203 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:38:59,233 INFO L321 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-12-14 09:38:59,233 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 27 [2022-12-14 09:39:02,420 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:39:02,458 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 09:39:02,459 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 09:39:10,467 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:39:10,468 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:39:10,550 INFO L321 Elim1Store]: treesize reduction 94, result has 36.5 percent of original size [2022-12-14 09:39:10,551 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 58 treesize of output 89 [2022-12-14 09:39:14,140 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:39:14,185 INFO L321 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-12-14 09:39:14,185 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 27 [2022-12-14 09:39:17,837 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:39:17,869 INFO L321 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-12-14 09:39:17,869 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 27 [2022-12-14 09:39:26,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:39:26,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:39:26,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:39:26,064 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:39:26,065 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:39:26,102 INFO L321 Elim1Store]: treesize reduction 31, result has 29.5 percent of original size [2022-12-14 09:39:26,103 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 137 treesize of output 142 [2022-12-14 09:39:30,156 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:39:30,186 INFO L321 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2022-12-14 09:39:30,186 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 27 [2022-12-14 09:39:33,009 INFO L321 Elim1Store]: treesize reduction 1529, result has 3.5 percent of original size [2022-12-14 09:39:33,009 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 11 case distinctions, treesize of input 39 treesize of output 61