./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-pthread/cs_read_write_lock-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653d9b7d-d4d8-4590-b521-2ac98dd60eb2/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653d9b7d-d4d8-4590-b521-2ac98dd60eb2/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653d9b7d-d4d8-4590-b521-2ac98dd60eb2/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653d9b7d-d4d8-4590-b521-2ac98dd60eb2/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-pthread/cs_read_write_lock-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653d9b7d-d4d8-4590-b521-2ac98dd60eb2/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653d9b7d-d4d8-4590-b521-2ac98dd60eb2/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1458378674bd140ace04512980940eeb05aa22f50528a181d147a292aa3349d2 --- 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-5e519f3 [2022-11-03 03:59:46,961 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 03:59:46,963 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 03:59:47,013 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 03:59:47,014 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 03:59:47,021 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 03:59:47,022 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 03:59:47,024 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 03:59:47,026 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 03:59:47,028 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 03:59:47,029 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 03:59:47,030 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 03:59:47,031 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 03:59:47,037 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 03:59:47,039 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 03:59:47,042 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 03:59:47,047 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 03:59:47,054 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 03:59:47,057 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 03:59:47,063 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 03:59:47,065 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 03:59:47,072 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 03:59:47,073 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 03:59:47,074 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 03:59:47,078 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 03:59:47,079 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 03:59:47,079 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 03:59:47,080 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 03:59:47,081 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 03:59:47,082 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 03:59:47,082 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 03:59:47,083 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 03:59:47,088 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 03:59:47,091 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 03:59:47,092 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 03:59:47,092 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 03:59:47,093 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 03:59:47,094 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 03:59:47,094 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 03:59:47,095 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 03:59:47,096 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 03:59:47,097 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653d9b7d-d4d8-4590-b521-2ac98dd60eb2/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 03:59:47,139 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 03:59:47,140 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 03:59:47,146 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 03:59:47,146 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 03:59:47,147 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 03:59:47,147 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 03:59:47,147 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 03:59:47,148 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 03:59:47,148 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 03:59:47,148 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 03:59:47,149 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 03:59:47,150 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 03:59:47,150 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 03:59:47,150 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 03:59:47,150 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 03:59:47,150 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 03:59:47,151 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 03:59:47,151 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 03:59:47,152 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 03:59:47,152 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 03:59:47,152 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 03:59:47,152 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 03:59:47,153 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 03:59:47,153 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 03:59:47,153 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 03:59:47,153 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 03:59:47,153 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 03:59:47,154 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 03:59:47,154 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 03:59:47,154 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 03:59:47,154 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 03:59:47,155 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 03:59:47,155 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:59:47,155 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 03:59:47,155 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 03:59:47,156 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 03:59:47,157 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 03:59:47,157 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 03:59:47,157 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 03:59:47,157 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 03:59:47,157 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 03:59:47,158 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_653d9b7d-d4d8-4590-b521-2ac98dd60eb2/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653d9b7d-d4d8-4590-b521-2ac98dd60eb2/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1458378674bd140ace04512980940eeb05aa22f50528a181d147a292aa3349d2 [2022-11-03 03:59:47,437 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 03:59:47,476 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 03:59:47,479 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 03:59:47,481 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 03:59:47,483 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 03:59:47,484 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653d9b7d-d4d8-4590-b521-2ac98dd60eb2/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/seq-pthread/cs_read_write_lock-2.i [2022-11-03 03:59:47,563 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653d9b7d-d4d8-4590-b521-2ac98dd60eb2/bin/utaipan-7li7fVZpFI/data/efae26573/30e803308a0a4bc0be831e999012e211/FLAG091b22f4d [2022-11-03 03:59:48,211 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 03:59:48,211 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653d9b7d-d4d8-4590-b521-2ac98dd60eb2/sv-benchmarks/c/seq-pthread/cs_read_write_lock-2.i [2022-11-03 03:59:48,243 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653d9b7d-d4d8-4590-b521-2ac98dd60eb2/bin/utaipan-7li7fVZpFI/data/efae26573/30e803308a0a4bc0be831e999012e211/FLAG091b22f4d [2022-11-03 03:59:48,502 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653d9b7d-d4d8-4590-b521-2ac98dd60eb2/bin/utaipan-7li7fVZpFI/data/efae26573/30e803308a0a4bc0be831e999012e211 [2022-11-03 03:59:48,505 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 03:59:48,506 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 03:59:48,509 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 03:59:48,509 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 03:59:48,515 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 03:59:48,515 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:59:48" (1/1) ... [2022-11-03 03:59:48,517 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d6862ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:48, skipping insertion in model container [2022-11-03 03:59:48,517 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:59:48" (1/1) ... [2022-11-03 03:59:48,525 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 03:59:48,565 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:59:48,919 WARN L230 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_653d9b7d-d4d8-4590-b521-2ac98dd60eb2/sv-benchmarks/c/seq-pthread/cs_read_write_lock-2.i[23469,23482] [2022-11-03 03:59:49,063 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:59:49,078 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 03:59:49,124 WARN L230 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_653d9b7d-d4d8-4590-b521-2ac98dd60eb2/sv-benchmarks/c/seq-pthread/cs_read_write_lock-2.i[23469,23482] [2022-11-03 03:59:49,201 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:59:49,234 INFO L208 MainTranslator]: Completed translation [2022-11-03 03:59:49,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:49 WrapperNode [2022-11-03 03:59:49,234 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 03:59:49,235 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 03:59:49,236 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 03:59:49,236 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 03:59:49,244 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:49" (1/1) ... [2022-11-03 03:59:49,265 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:49" (1/1) ... [2022-11-03 03:59:49,317 INFO L138 Inliner]: procedures = 145, calls = 279, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 558 [2022-11-03 03:59:49,318 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 03:59:49,319 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 03:59:49,319 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 03:59:49,319 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 03:59:49,329 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:49" (1/1) ... [2022-11-03 03:59:49,330 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:49" (1/1) ... [2022-11-03 03:59:49,341 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:49" (1/1) ... [2022-11-03 03:59:49,342 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:49" (1/1) ... [2022-11-03 03:59:49,387 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:49" (1/1) ... [2022-11-03 03:59:49,408 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:49" (1/1) ... [2022-11-03 03:59:49,411 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:49" (1/1) ... [2022-11-03 03:59:49,414 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:49" (1/1) ... [2022-11-03 03:59:49,420 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 03:59:49,421 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 03:59:49,421 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 03:59:49,421 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 03:59:49,425 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:49" (1/1) ... [2022-11-03 03:59:49,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:59:49,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653d9b7d-d4d8-4590-b521-2ac98dd60eb2/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:59:49,471 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653d9b7d-d4d8-4590-b521-2ac98dd60eb2/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 03:59:49,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653d9b7d-d4d8-4590-b521-2ac98dd60eb2/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 03:59:49,535 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 03:59:49,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 03:59:49,535 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-03 03:59:49,536 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-03 03:59:49,536 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 03:59:49,536 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 03:59:49,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 03:59:49,537 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_create [2022-11-03 03:59:49,537 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_create [2022-11-03 03:59:49,537 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 03:59:49,537 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_join [2022-11-03 03:59:49,538 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_join [2022-11-03 03:59:49,539 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~$Pointer$ [2022-11-03 03:59:49,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~$Pointer$ [2022-11-03 03:59:49,540 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 03:59:49,541 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_cs [2022-11-03 03:59:49,541 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_cs [2022-11-03 03:59:49,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 03:59:49,541 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_assume [2022-11-03 03:59:49,541 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_assume [2022-11-03 03:59:49,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 03:59:49,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 03:59:49,802 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 03:59:49,805 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 03:59:50,485 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##42: assume !(0 != ~__CS_ret~0 % 256); [2022-11-03 03:59:50,485 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##41: assume 0 != ~__CS_ret~0 % 256;reader_#res#1.base, reader_#res#1.offset := 0, 0; [2022-11-03 03:59:53,121 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 03:59:53,317 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 03:59:53,317 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 03:59:53,321 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:59:53 BoogieIcfgContainer [2022-11-03 03:59:53,321 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 03:59:53,324 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 03:59:53,324 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 03:59:53,329 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 03:59:53,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:59:48" (1/3) ... [2022-11-03 03:59:53,330 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@245f66c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:59:53, skipping insertion in model container [2022-11-03 03:59:53,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:49" (2/3) ... [2022-11-03 03:59:53,331 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@245f66c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:59:53, skipping insertion in model container [2022-11-03 03:59:53,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:59:53" (3/3) ... [2022-11-03 03:59:53,333 INFO L112 eAbstractionObserver]: Analyzing ICFG cs_read_write_lock-2.i [2022-11-03 03:59:53,358 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 03:59:53,359 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 03:59:53,449 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 03:59:53,457 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;@698119c5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 03:59:53,457 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 03:59:53,461 INFO L276 IsEmpty]: Start isEmpty. Operand has 145 states, 84 states have (on average 1.369047619047619) internal successors, (115), 85 states have internal predecessors, (115), 53 states have call successors, (53), 6 states have call predecessors, (53), 6 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2022-11-03 03:59:53,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-03 03:59:53,478 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:59:53,479 INFO L195 NwaCegarLoop]: trace histogram [14, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:59:53,480 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:59:53,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:59:53,485 INFO L85 PathProgramCache]: Analyzing trace with hash 822227597, now seen corresponding path program 1 times [2022-11-03 03:59:53,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:59:53,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140842546] [2022-11-03 03:59:53,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:59:53,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:59:54,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:59:55,925 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2022-11-03 03:59:55,926 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:59:55,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140842546] [2022-11-03 03:59:55,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140842546] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:59:55,928 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:59:55,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:59:55,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020372024] [2022-11-03 03:59:55,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:59:55,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:59:55,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:59:55,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:59:55,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:59:55,997 INFO L87 Difference]: Start difference. First operand has 145 states, 84 states have (on average 1.369047619047619) internal successors, (115), 85 states have internal predecessors, (115), 53 states have call successors, (53), 6 states have call predecessors, (53), 6 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2022-11-03 03:59:58,041 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:59:58,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:59:58,486 INFO L93 Difference]: Finished difference Result 289 states and 447 transitions. [2022-11-03 03:59:58,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:59:58,490 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 69 [2022-11-03 03:59:58,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:59:58,507 INFO L225 Difference]: With dead ends: 289 [2022-11-03 03:59:58,507 INFO L226 Difference]: Without dead ends: 250 [2022-11-03 03:59:58,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:59:58,514 INFO L413 NwaCegarLoop]: 269 mSDtfsCounter, 180 mSDsluCounter, 509 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 736 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:59:58,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 736 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 74 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-11-03 03:59:58,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2022-11-03 03:59:58,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 249. [2022-11-03 03:59:58,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 145 states have (on average 1.3862068965517242) internal successors, (201), 146 states have internal predecessors, (201), 91 states have call successors, (91), 12 states have call predecessors, (91), 12 states have return successors, (99), 90 states have call predecessors, (99), 91 states have call successors, (99) [2022-11-03 03:59:58,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 391 transitions. [2022-11-03 03:59:58,639 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 391 transitions. Word has length 69 [2022-11-03 03:59:58,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:59:58,640 INFO L495 AbstractCegarLoop]: Abstraction has 249 states and 391 transitions. [2022-11-03 03:59:58,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2022-11-03 03:59:58,642 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 391 transitions. [2022-11-03 03:59:58,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-03 03:59:58,654 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:59:58,654 INFO L195 NwaCegarLoop]: trace histogram [19, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:59:58,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 03:59:58,655 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:59:58,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:59:58,656 INFO L85 PathProgramCache]: Analyzing trace with hash 374279635, now seen corresponding path program 1 times [2022-11-03 03:59:58,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:59:58,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648074579] [2022-11-03 03:59:58,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:59:58,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:59:59,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:00:00,461 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 382 trivial. 0 not checked. [2022-11-03 04:00:00,462 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:00:00,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648074579] [2022-11-03 04:00:00,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648074579] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:00:00,465 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:00:00,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 04:00:00,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266382107] [2022-11-03 04:00:00,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:00:00,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 04:00:00,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:00:00,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 04:00:00,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 04:00:00,474 INFO L87 Difference]: Start difference. First operand 249 states and 391 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 4 states have call successors, (22), 1 states have call predecessors, (22), 2 states have return successors, (22), 3 states have call predecessors, (22), 4 states have call successors, (22) [2022-11-03 04:00:02,499 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:00:02,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:00:02,943 INFO L93 Difference]: Finished difference Result 458 states and 723 transitions. [2022-11-03 04:00:02,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 04:00:02,945 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 4 states have call successors, (22), 1 states have call predecessors, (22), 2 states have return successors, (22), 3 states have call predecessors, (22), 4 states have call successors, (22) Word has length 122 [2022-11-03 04:00:02,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:00:02,952 INFO L225 Difference]: With dead ends: 458 [2022-11-03 04:00:02,952 INFO L226 Difference]: Without dead ends: 419 [2022-11-03 04:00:02,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 04:00:02,956 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 184 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 24 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-03 04:00:02,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 551 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 104 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-11-03 04:00:02,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2022-11-03 04:00:03,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 409. [2022-11-03 04:00:03,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 239 states have (on average 1.3765690376569037) internal successors, (329), 244 states have internal predecessors, (329), 146 states have call successors, (146), 20 states have call predecessors, (146), 23 states have return successors, (177), 144 states have call predecessors, (177), 146 states have call successors, (177) [2022-11-03 04:00:03,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 652 transitions. [2022-11-03 04:00:03,061 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 652 transitions. Word has length 122 [2022-11-03 04:00:03,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:00:03,062 INFO L495 AbstractCegarLoop]: Abstraction has 409 states and 652 transitions. [2022-11-03 04:00:03,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 4 states have call successors, (22), 1 states have call predecessors, (22), 2 states have return successors, (22), 3 states have call predecessors, (22), 4 states have call successors, (22) [2022-11-03 04:00:03,062 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 652 transitions. [2022-11-03 04:00:03,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-03 04:00:03,078 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:00:03,078 INFO L195 NwaCegarLoop]: trace histogram [19, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:00:03,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 04:00:03,079 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:00:03,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:00:03,085 INFO L85 PathProgramCache]: Analyzing trace with hash -253312791, now seen corresponding path program 1 times [2022-11-03 04:00:03,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:00:03,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383476748] [2022-11-03 04:00:03,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:00:03,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:00:03,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:00:04,368 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 382 trivial. 0 not checked. [2022-11-03 04:00:04,369 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:00:04,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383476748] [2022-11-03 04:00:04,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383476748] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:00:04,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:00:04,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 04:00:04,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991946145] [2022-11-03 04:00:04,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:00:04,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 04:00:04,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:00:04,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 04:00:04,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 04:00:04,372 INFO L87 Difference]: Start difference. First operand 409 states and 652 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 4 states have call successors, (22), 1 states have call predecessors, (22), 2 states have return successors, (22), 3 states have call predecessors, (22), 4 states have call successors, (22) [2022-11-03 04:00:06,399 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:00:06,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:00:06,808 INFO L93 Difference]: Finished difference Result 729 states and 1140 transitions. [2022-11-03 04:00:06,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 04:00:06,809 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 4 states have call successors, (22), 1 states have call predecessors, (22), 2 states have return successors, (22), 3 states have call predecessors, (22), 4 states have call successors, (22) Word has length 122 [2022-11-03 04:00:06,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:00:06,814 INFO L225 Difference]: With dead ends: 729 [2022-11-03 04:00:06,814 INFO L226 Difference]: Without dead ends: 415 [2022-11-03 04:00:06,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 04:00:06,818 INFO L413 NwaCegarLoop]: 222 mSDtfsCounter, 186 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 23 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-03 04:00:06,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 560 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 104 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-11-03 04:00:06,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2022-11-03 04:00:06,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 405. [2022-11-03 04:00:06,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 236 states have (on average 1.3771186440677967) internal successors, (325), 241 states have internal predecessors, (325), 145 states have call successors, (145), 20 states have call predecessors, (145), 23 states have return successors, (171), 143 states have call predecessors, (171), 145 states have call successors, (171) [2022-11-03 04:00:06,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 641 transitions. [2022-11-03 04:00:06,861 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 641 transitions. Word has length 122 [2022-11-03 04:00:06,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:00:06,862 INFO L495 AbstractCegarLoop]: Abstraction has 405 states and 641 transitions. [2022-11-03 04:00:06,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 4 states have call successors, (22), 1 states have call predecessors, (22), 2 states have return successors, (22), 3 states have call predecessors, (22), 4 states have call successors, (22) [2022-11-03 04:00:06,863 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 641 transitions. [2022-11-03 04:00:06,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-03 04:00:06,868 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:00:06,868 INFO L195 NwaCegarLoop]: trace histogram [19, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:00:06,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 04:00:06,869 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:00:06,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:00:06,870 INFO L85 PathProgramCache]: Analyzing trace with hash 199456286, now seen corresponding path program 1 times [2022-11-03 04:00:06,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:00:06,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544410712] [2022-11-03 04:00:06,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:00:06,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:00:07,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:00:08,163 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 382 trivial. 0 not checked. [2022-11-03 04:00:08,166 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:00:08,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544410712] [2022-11-03 04:00:08,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544410712] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:00:08,170 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:00:08,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 04:00:08,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550788177] [2022-11-03 04:00:08,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:00:08,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 04:00:08,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:00:08,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 04:00:08,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 04:00:08,173 INFO L87 Difference]: Start difference. First operand 405 states and 641 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 4 states have call successors, (22), 1 states have call predecessors, (22), 2 states have return successors, (22), 3 states have call predecessors, (22), 4 states have call successors, (22) [2022-11-03 04:00:10,188 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:00:10,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:00:10,596 INFO L93 Difference]: Finished difference Result 737 states and 1149 transitions. [2022-11-03 04:00:10,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 04:00:10,597 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 4 states have call successors, (22), 1 states have call predecessors, (22), 2 states have return successors, (22), 3 states have call predecessors, (22), 4 states have call successors, (22) Word has length 122 [2022-11-03 04:00:10,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:00:10,601 INFO L225 Difference]: With dead ends: 737 [2022-11-03 04:00:10,602 INFO L226 Difference]: Without dead ends: 411 [2022-11-03 04:00:10,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 04:00:10,605 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 188 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 22 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-03 04:00:10,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 569 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 102 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-11-03 04:00:10,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2022-11-03 04:00:10,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 401. [2022-11-03 04:00:10,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 233 states have (on average 1.3776824034334765) internal successors, (321), 238 states have internal predecessors, (321), 144 states have call successors, (144), 20 states have call predecessors, (144), 23 states have return successors, (165), 142 states have call predecessors, (165), 144 states have call successors, (165) [2022-11-03 04:00:10,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 630 transitions. [2022-11-03 04:00:10,646 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 630 transitions. Word has length 122 [2022-11-03 04:00:10,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:00:10,646 INFO L495 AbstractCegarLoop]: Abstraction has 401 states and 630 transitions. [2022-11-03 04:00:10,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 4 states have call successors, (22), 1 states have call predecessors, (22), 2 states have return successors, (22), 3 states have call predecessors, (22), 4 states have call successors, (22) [2022-11-03 04:00:10,647 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 630 transitions. [2022-11-03 04:00:10,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-03 04:00:10,652 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:00:10,652 INFO L195 NwaCegarLoop]: trace histogram [19, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:00:10,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 04:00:10,653 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:00:10,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:00:10,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1211055634, now seen corresponding path program 1 times [2022-11-03 04:00:10,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:00:10,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571871117] [2022-11-03 04:00:10,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:00:10,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:00:10,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:00:11,988 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 382 trivial. 0 not checked. [2022-11-03 04:00:11,988 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:00:11,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571871117] [2022-11-03 04:00:11,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571871117] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:00:11,989 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:00:11,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 04:00:11,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429339246] [2022-11-03 04:00:11,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:00:11,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 04:00:11,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:00:11,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 04:00:11,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 04:00:11,999 INFO L87 Difference]: Start difference. First operand 401 states and 630 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 4 states have call successors, (22), 1 states have call predecessors, (22), 2 states have return successors, (22), 3 states have call predecessors, (22), 4 states have call successors, (22) [2022-11-03 04:00:14,015 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:00:14,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:00:14,389 INFO L93 Difference]: Finished difference Result 745 states and 1158 transitions. [2022-11-03 04:00:14,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 04:00:14,390 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 4 states have call successors, (22), 1 states have call predecessors, (22), 2 states have return successors, (22), 3 states have call predecessors, (22), 4 states have call successors, (22) Word has length 122 [2022-11-03 04:00:14,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:00:14,393 INFO L225 Difference]: With dead ends: 745 [2022-11-03 04:00:14,394 INFO L226 Difference]: Without dead ends: 357 [2022-11-03 04:00:14,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 04:00:14,398 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 190 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 21 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-03 04:00:14,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 575 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 100 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-11-03 04:00:14,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2022-11-03 04:00:14,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 351. [2022-11-03 04:00:14,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 205 states have (on average 1.3073170731707318) internal successors, (268), 208 states have internal predecessors, (268), 123 states have call successors, (123), 20 states have call predecessors, (123), 22 states have return successors, (139), 122 states have call predecessors, (139), 123 states have call successors, (139) [2022-11-03 04:00:14,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 530 transitions. [2022-11-03 04:00:14,430 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 530 transitions. Word has length 122 [2022-11-03 04:00:14,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:00:14,430 INFO L495 AbstractCegarLoop]: Abstraction has 351 states and 530 transitions. [2022-11-03 04:00:14,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 4 states have call successors, (22), 1 states have call predecessors, (22), 2 states have return successors, (22), 3 states have call predecessors, (22), 4 states have call successors, (22) [2022-11-03 04:00:14,431 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 530 transitions. [2022-11-03 04:00:14,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-03 04:00:14,435 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:00:14,435 INFO L195 NwaCegarLoop]: trace histogram [19, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:00:14,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 04:00:14,436 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:00:14,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:00:14,436 INFO L85 PathProgramCache]: Analyzing trace with hash -401929291, now seen corresponding path program 1 times [2022-11-03 04:00:14,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:00:14,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494728022] [2022-11-03 04:00:14,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:00:14,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:00:14,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:00:16,016 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 382 trivial. 0 not checked. [2022-11-03 04:00:16,018 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:00:16,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494728022] [2022-11-03 04:00:16,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494728022] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:00:16,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:00:16,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 04:00:16,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176077262] [2022-11-03 04:00:16,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:00:16,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 04:00:16,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:00:16,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 04:00:16,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 04:00:16,022 INFO L87 Difference]: Start difference. First operand 351 states and 530 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 4 states have call successors, (22), 1 states have call predecessors, (22), 2 states have return successors, (22), 3 states have call predecessors, (22), 4 states have call successors, (22) [2022-11-03 04:00:18,038 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 04:00:18,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:00:18,310 INFO L93 Difference]: Finished difference Result 361 states and 549 transitions. [2022-11-03 04:00:18,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 04:00:18,311 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 4 states have call successors, (22), 1 states have call predecessors, (22), 2 states have return successors, (22), 3 states have call predecessors, (22), 4 states have call successors, (22) Word has length 122 [2022-11-03 04:00:18,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:00:18,313 INFO L225 Difference]: With dead ends: 361 [2022-11-03 04:00:18,313 INFO L226 Difference]: Without dead ends: 269 [2022-11-03 04:00:18,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 04:00:18,315 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 42 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 546 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-03 04:00:18,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 546 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 86 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-11-03 04:00:18,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2022-11-03 04:00:18,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 265. [2022-11-03 04:00:18,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 154 states have (on average 1.3571428571428572) internal successors, (209), 157 states have internal predecessors, (209), 93 states have call successors, (93), 15 states have call predecessors, (93), 17 states have return successors, (116), 92 states have call predecessors, (116), 93 states have call successors, (116) [2022-11-03 04:00:18,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 418 transitions. [2022-11-03 04:00:18,335 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 418 transitions. Word has length 122 [2022-11-03 04:00:18,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:00:18,336 INFO L495 AbstractCegarLoop]: Abstraction has 265 states and 418 transitions. [2022-11-03 04:00:18,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 4 states have call successors, (22), 1 states have call predecessors, (22), 2 states have return successors, (22), 3 states have call predecessors, (22), 4 states have call successors, (22) [2022-11-03 04:00:18,336 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 418 transitions. [2022-11-03 04:00:18,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-11-03 04:00:18,340 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:00:18,341 INFO L195 NwaCegarLoop]: trace histogram [22, 8, 8, 8, 8, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:00:18,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 04:00:18,341 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:00:18,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:00:18,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1239967318, now seen corresponding path program 1 times [2022-11-03 04:00:18,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:00:18,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191283259] [2022-11-03 04:00:18,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:00:18,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:00:21,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:00:24,989 INFO L134 CoverageAnalysis]: Checked inductivity of 605 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 586 trivial. 0 not checked. [2022-11-03 04:00:24,989 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:00:24,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191283259] [2022-11-03 04:00:24,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191283259] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:00:24,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1221131321] [2022-11-03 04:00:24,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:00:24,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:00:24,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653d9b7d-d4d8-4590-b521-2ac98dd60eb2/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:00:24,993 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653d9b7d-d4d8-4590-b521-2ac98dd60eb2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:00:25,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_653d9b7d-d4d8-4590-b521-2ac98dd60eb2/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 04:00:26,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:00:26,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 3302 conjuncts, 51 conjunts are in the unsatisfiable core [2022-11-03 04:00:26,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:00:26,726 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-11-03 04:00:26,750 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-11-03 04:00:27,206 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 8 treesize of output 7 [2022-11-03 04:00:27,211 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 8 treesize of output 7 [2022-11-03 04:00:27,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:00:27,444 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 14 treesize of output 16 [2022-11-03 04:00:27,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:00:27,456 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 14 treesize of output 16 [2022-11-03 04:00:27,847 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 04:00:27,864 INFO L134 CoverageAnalysis]: Checked inductivity of 605 backedges. 230 proven. 55 refuted. 0 times theorem prover too weak. 320 trivial. 0 not checked. [2022-11-03 04:00:27,864 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:00:28,107 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2022-11-03 04:00:28,112 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-03 04:00:31,534 INFO L356 Elim1Store]: treesize reduction 76, result has 43.3 percent of original size [2022-11-03 04:00:31,534 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 38 treesize of output 109 [2022-11-03 04:00:31,601 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 04:00:31,602 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 49 [2022-11-03 04:00:31,669 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 04:00:31,669 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 48 [2022-11-03 04:00:32,011 WARN L234 Elim1Store]: Array PQE input equivalent to true [2022-11-03 04:00:32,047 WARN L234 Elim1Store]: Array PQE input equivalent to true [2022-11-03 04:00:32,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1221131321] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:00:32,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2099851783] [2022-11-03 04:00:32,395 INFO L159 IcfgInterpreter]: Started Sifa with 85 locations of interest [2022-11-03 04:00:32,399 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 04:00:32,403 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 04:00:32,409 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 04:00:32,410 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 04:00:32,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:00:32,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:00:32,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:00:32,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:00:32,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:00:32,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:00:32,702 INFO L244 Elim1Store]: Index analysis took 108 ms [2022-11-03 04:00:34,354 INFO L356 Elim1Store]: treesize reduction 1347, result has 14.5 percent of original size [2022-11-03 04:00:34,355 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 11 select indices, 11 select index equivalence classes, 69 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 77 treesize of output 272 [2022-11-03 04:00:34,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:00:34,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:00:34,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 04:00:38,259 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:00:38,260 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:00:38,261 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:00:38,262 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:00:38,263 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:00:38,264 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:00:38,266 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:00:38,267 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:00:38,268 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:00:38,269 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:00:38,271 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:00:38,272 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:00:38,273 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:00:38,275 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:00:38,276 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:00:38,278 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 04:00:38,568 INFO L244 Elim1Store]: Index analysis took 1944 ms