./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a 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_7d6b955c-763d-412f-9701-5fc65be5f226/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b955c-763d-412f-9701-5fc65be5f226/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b955c-763d-412f-9701-5fc65be5f226/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b955c-763d-412f-9701-5fc65be5f226/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b955c-763d-412f-9701-5fc65be5f226/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b955c-763d-412f-9701-5fc65be5f226/bin/utaipan-ByfvJB40ur --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 eb7e704db84b45f8c7f1cb386fc610e1107f57c6e67c0a3b2af510d7426cfd4f --- 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-38b53e6 [2022-11-26 00:33:13,195 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 00:33:13,198 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 00:33:13,231 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 00:33:13,235 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 00:33:13,239 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 00:33:13,244 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 00:33:13,247 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 00:33:13,249 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 00:33:13,255 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 00:33:13,257 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 00:33:13,259 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 00:33:13,260 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 00:33:13,263 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 00:33:13,265 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 00:33:13,267 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 00:33:13,270 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 00:33:13,271 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 00:33:13,272 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 00:33:13,279 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 00:33:13,281 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 00:33:13,284 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 00:33:13,285 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 00:33:13,286 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 00:33:13,297 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 00:33:13,298 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 00:33:13,299 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 00:33:13,300 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 00:33:13,301 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 00:33:13,302 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 00:33:13,303 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 00:33:13,304 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 00:33:13,306 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 00:33:13,307 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 00:33:13,309 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 00:33:13,310 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 00:33:13,311 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 00:33:13,311 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 00:33:13,311 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 00:33:13,313 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 00:33:13,314 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 00:33:13,315 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b955c-763d-412f-9701-5fc65be5f226/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-26 00:33:13,358 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 00:33:13,358 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 00:33:13,359 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 00:33:13,359 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 00:33:13,360 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 00:33:13,361 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 00:33:13,361 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 00:33:13,361 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 00:33:13,362 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 00:33:13,362 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-26 00:33:13,363 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 00:33:13,364 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 00:33:13,364 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-26 00:33:13,364 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-26 00:33:13,365 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 00:33:13,365 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-26 00:33:13,365 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-26 00:33:13,366 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-26 00:33:13,367 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 00:33:13,367 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-26 00:33:13,368 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-26 00:33:13,368 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-26 00:33:13,368 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 00:33:13,369 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-26 00:33:13,369 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 00:33:13,369 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-26 00:33:13,369 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-26 00:33:13,370 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-26 00:33:13,370 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 00:33:13,370 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-26 00:33:13,371 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 00:33:13,371 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 00:33:13,372 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:33:13,372 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 00:33:13,372 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-26 00:33:13,373 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 00:33:13,373 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-26 00:33:13,373 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-26 00:33:13,373 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-26 00:33:13,374 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-26 00:33:13,374 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 00:33:13,374 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_7d6b955c-763d-412f-9701-5fc65be5f226/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b955c-763d-412f-9701-5fc65be5f226/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eb7e704db84b45f8c7f1cb386fc610e1107f57c6e67c0a3b2af510d7426cfd4f [2022-11-26 00:33:13,717 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 00:33:13,747 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 00:33:13,752 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 00:33:13,754 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 00:33:13,754 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 00:33:13,756 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b955c-763d-412f-9701-5fc65be5f226/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound5.c [2022-11-26 00:33:16,897 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 00:33:17,083 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 00:33:17,084 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b955c-763d-412f-9701-5fc65be5f226/sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound5.c [2022-11-26 00:33:17,091 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b955c-763d-412f-9701-5fc65be5f226/bin/utaipan-ByfvJB40ur/data/8cc8bacbe/6001136011cf4f0da6e4bf728f3bed92/FLAG1b5aa1759 [2022-11-26 00:33:17,108 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b955c-763d-412f-9701-5fc65be5f226/bin/utaipan-ByfvJB40ur/data/8cc8bacbe/6001136011cf4f0da6e4bf728f3bed92 [2022-11-26 00:33:17,111 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 00:33:17,113 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 00:33:17,115 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 00:33:17,115 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 00:33:17,120 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 00:33:17,121 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:33:17" (1/1) ... [2022-11-26 00:33:17,122 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@327c77dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:33:17, skipping insertion in model container [2022-11-26 00:33:17,123 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:33:17" (1/1) ... [2022-11-26 00:33:17,136 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 00:33:17,166 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 00:33:17,323 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_7d6b955c-763d-412f-9701-5fc65be5f226/sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound5.c[525,538] [2022-11-26 00:33:17,355 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:33:17,366 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 00:33:17,380 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_7d6b955c-763d-412f-9701-5fc65be5f226/sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound5.c[525,538] [2022-11-26 00:33:17,404 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:33:17,425 INFO L208 MainTranslator]: Completed translation [2022-11-26 00:33:17,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:33:17 WrapperNode [2022-11-26 00:33:17,426 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 00:33:17,428 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 00:33:17,428 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 00:33:17,428 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 00:33:17,437 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:33:17" (1/1) ... [2022-11-26 00:33:17,460 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:33:17" (1/1) ... [2022-11-26 00:33:17,500 INFO L138 Inliner]: procedures = 14, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 64 [2022-11-26 00:33:17,500 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 00:33:17,501 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 00:33:17,501 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 00:33:17,501 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 00:33:17,513 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:33:17" (1/1) ... [2022-11-26 00:33:17,514 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:33:17" (1/1) ... [2022-11-26 00:33:17,517 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:33:17" (1/1) ... [2022-11-26 00:33:17,518 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:33:17" (1/1) ... [2022-11-26 00:33:17,532 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:33:17" (1/1) ... [2022-11-26 00:33:17,536 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:33:17" (1/1) ... [2022-11-26 00:33:17,537 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:33:17" (1/1) ... [2022-11-26 00:33:17,538 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:33:17" (1/1) ... [2022-11-26 00:33:17,545 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 00:33:17,547 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 00:33:17,547 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 00:33:17,547 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 00:33:17,548 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:33:17" (1/1) ... [2022-11-26 00:33:17,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:33:17,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b955c-763d-412f-9701-5fc65be5f226/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:33:17,585 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b955c-763d-412f-9701-5fc65be5f226/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 00:33:17,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b955c-763d-412f-9701-5fc65be5f226/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 00:33:17,637 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-26 00:33:17,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-26 00:33:17,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 00:33:17,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 00:33:17,638 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-26 00:33:17,638 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-26 00:33:17,720 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 00:33:17,722 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 00:33:18,039 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 00:33:18,083 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 00:33:18,084 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-26 00:33:18,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:33:18 BoogieIcfgContainer [2022-11-26 00:33:18,087 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 00:33:18,089 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 00:33:18,089 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 00:33:18,093 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 00:33:18,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:33:17" (1/3) ... [2022-11-26 00:33:18,100 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66dbbe3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:33:18, skipping insertion in model container [2022-11-26 00:33:18,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:33:17" (2/3) ... [2022-11-26 00:33:18,115 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66dbbe3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:33:18, skipping insertion in model container [2022-11-26 00:33:18,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:33:18" (3/3) ... [2022-11-26 00:33:18,117 INFO L112 eAbstractionObserver]: Analyzing ICFG dijkstra-u_unwindbound5.c [2022-11-26 00:33:18,138 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 00:33:18,154 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-26 00:33:18,209 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 00:33:18,217 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;@59d85e6a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 00:33:18,217 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-26 00:33:18,241 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 13 states have internal predecessors, (20), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-26 00:33:18,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-26 00:33:18,249 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:33:18,250 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:33:18,251 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:33:18,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:33:18,260 INFO L85 PathProgramCache]: Analyzing trace with hash -678335095, now seen corresponding path program 1 times [2022-11-26 00:33:18,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:33:18,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692974475] [2022-11-26 00:33:18,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:33:18,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:33:18,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:33:18,444 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:33:18,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692974475] [2022-11-26 00:33:18,445 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-26 00:33:18,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [713838230] [2022-11-26 00:33:18,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:33:18,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:33:18,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b955c-763d-412f-9701-5fc65be5f226/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:33:18,455 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b955c-763d-412f-9701-5fc65be5f226/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:33:18,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b955c-763d-412f-9701-5fc65be5f226/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-26 00:33:18,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:33:18,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-26 00:33:18,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:33:18,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:33:18,571 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 00:33:18,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [713838230] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:33:18,572 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:33:18,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-26 00:33:18,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290618360] [2022-11-26 00:33:18,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:33:18,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-26 00:33:18,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:33:18,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-26 00:33:18,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-26 00:33:18,630 INFO L87 Difference]: Start difference. First operand has 24 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 13 states have internal predecessors, (20), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:33:18,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:33:18,701 INFO L93 Difference]: Finished difference Result 44 states and 78 transitions. [2022-11-26 00:33:18,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-26 00:33:18,705 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-26 00:33:18,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:33:18,713 INFO L225 Difference]: With dead ends: 44 [2022-11-26 00:33:18,714 INFO L226 Difference]: Without dead ends: 22 [2022-11-26 00:33:18,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-26 00:33:18,726 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:33:18,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 00:33:18,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-11-26 00:33:18,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-11-26 00:33:18,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-26 00:33:18,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 33 transitions. [2022-11-26 00:33:18,770 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 33 transitions. Word has length 7 [2022-11-26 00:33:18,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:33:18,771 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 33 transitions. [2022-11-26 00:33:18,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:33:18,771 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 33 transitions. [2022-11-26 00:33:18,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-26 00:33:18,772 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:33:18,772 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:33:18,779 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b955c-763d-412f-9701-5fc65be5f226/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-26 00:33:18,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b955c-763d-412f-9701-5fc65be5f226/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:33:18,979 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:33:18,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:33:18,980 INFO L85 PathProgramCache]: Analyzing trace with hash 520368722, now seen corresponding path program 1 times [2022-11-26 00:33:18,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:33:18,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522569805] [2022-11-26 00:33:18,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:33:18,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:33:19,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:33:19,017 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:33:19,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522569805] [2022-11-26 00:33:19,017 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-26 00:33:19,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927587031] [2022-11-26 00:33:19,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:33:19,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:33:19,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b955c-763d-412f-9701-5fc65be5f226/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:33:19,019 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b955c-763d-412f-9701-5fc65be5f226/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:33:19,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b955c-763d-412f-9701-5fc65be5f226/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-26 00:33:19,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:33:19,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-26 00:33:19,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:33:19,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:33:19,187 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 00:33:19,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [927587031] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:33:19,188 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:33:19,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 00:33:19,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471846524] [2022-11-26 00:33:19,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:33:19,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-26 00:33:19,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:33:19,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-26 00:33:19,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-26 00:33:19,191 INFO L87 Difference]: Start difference. First operand 22 states and 33 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:33:19,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:33:19,221 INFO L93 Difference]: Finished difference Result 42 states and 63 transitions. [2022-11-26 00:33:19,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-26 00:33:19,222 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-26 00:33:19,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:33:19,224 INFO L225 Difference]: With dead ends: 42 [2022-11-26 00:33:19,224 INFO L226 Difference]: Without dead ends: 24 [2022-11-26 00:33:19,225 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-26 00:33:19,226 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:33:19,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 85 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 00:33:19,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-11-26 00:33:19,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-11-26 00:33:19,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-26 00:33:19,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 35 transitions. [2022-11-26 00:33:19,236 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 35 transitions. Word has length 9 [2022-11-26 00:33:19,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:33:19,236 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 35 transitions. [2022-11-26 00:33:19,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:33:19,237 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 35 transitions. [2022-11-26 00:33:19,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-26 00:33:19,238 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:33:19,238 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:33:19,250 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b955c-763d-412f-9701-5fc65be5f226/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-26 00:33:19,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b955c-763d-412f-9701-5fc65be5f226/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:33:19,444 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:33:19,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:33:19,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1389535714, now seen corresponding path program 1 times [2022-11-26 00:33:19,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:33:19,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338469675] [2022-11-26 00:33:19,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:33:19,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:33:19,471 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-26 00:33:19,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [330037702] [2022-11-26 00:33:19,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:33:19,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:33:19,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b955c-763d-412f-9701-5fc65be5f226/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:33:19,473 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b955c-763d-412f-9701-5fc65be5f226/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:33:19,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b955c-763d-412f-9701-5fc65be5f226/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-26 00:33:19,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:33:19,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-26 00:33:19,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:33:19,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:33:19,601 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 00:33:19,601 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:33:19,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338469675] [2022-11-26 00:33:19,602 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-26 00:33:19,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [330037702] [2022-11-26 00:33:19,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [330037702] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:33:19,603 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:33:19,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-26 00:33:19,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500988306] [2022-11-26 00:33:19,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:33:19,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:33:19,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:33:19,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:33:19,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:33:19,605 INFO L87 Difference]: Start difference. First operand 24 states and 35 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:33:19,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:33:19,643 INFO L93 Difference]: Finished difference Result 37 states and 51 transitions. [2022-11-26 00:33:19,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 00:33:19,644 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-26 00:33:19,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:33:19,645 INFO L225 Difference]: With dead ends: 37 [2022-11-26 00:33:19,645 INFO L226 Difference]: Without dead ends: 28 [2022-11-26 00:33:19,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:33:19,647 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 1 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:33:19,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 111 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 00:33:19,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-11-26 00:33:19,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2022-11-26 00:33:19,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-26 00:33:19,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 39 transitions. [2022-11-26 00:33:19,655 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 39 transitions. Word has length 10 [2022-11-26 00:33:19,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:33:19,656 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 39 transitions. [2022-11-26 00:33:19,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:33:19,656 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 39 transitions. [2022-11-26 00:33:19,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-26 00:33:19,657 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:33:19,657 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:33:19,668 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b955c-763d-412f-9701-5fc65be5f226/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-26 00:33:19,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b955c-763d-412f-9701-5fc65be5f226/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:33:19,864 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:33:19,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:33:19,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1388046164, now seen corresponding path program 1 times [2022-11-26 00:33:19,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:33:19,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938008874] [2022-11-26 00:33:19,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:33:19,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:33:19,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:33:20,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:33:20,578 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:33:20,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938008874] [2022-11-26 00:33:20,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938008874] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:33:20,579 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:33:20,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-26 00:33:20,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926312024] [2022-11-26 00:33:20,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:33:20,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-26 00:33:20,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:33:20,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-26 00:33:20,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-26 00:33:20,581 INFO L87 Difference]: Start difference. First operand 27 states and 39 transitions. Second operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:33:22,980 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-26 00:33:24,982 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-26 00:33:26,987 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-26 00:33:28,998 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-26 00:33:31,100 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-26 00:33:33,102 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-26 00:33:35,113 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-26 00:33:37,115 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-26 00:33:37,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:33:37,222 INFO L93 Difference]: Finished difference Result 59 states and 89 transitions. [2022-11-26 00:33:37,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-26 00:33:37,227 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-26 00:33:37,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:33:37,228 INFO L225 Difference]: With dead ends: 59 [2022-11-26 00:33:37,228 INFO L226 Difference]: Without dead ends: 39 [2022-11-26 00:33:37,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:33:37,230 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 11 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 24 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.6s IncrementalHoareTripleChecker+Time [2022-11-26 00:33:37,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 107 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 89 Invalid, 8 Unknown, 0 Unchecked, 16.6s Time] [2022-11-26 00:33:37,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-11-26 00:33:37,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2022-11-26 00:33:37,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 20 states have (on average 1.3) internal successors, (26), 22 states have internal predecessors, (26), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-26 00:33:37,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 56 transitions. [2022-11-26 00:33:37,272 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 56 transitions. Word has length 10 [2022-11-26 00:33:37,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:33:37,277 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 56 transitions. [2022-11-26 00:33:37,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:33:37,277 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 56 transitions. [2022-11-26 00:33:37,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-26 00:33:37,279 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:33:37,279 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:33:37,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-26 00:33:37,280 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:33:37,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:33:37,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1970023331, now seen corresponding path program 1 times [2022-11-26 00:33:37,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:33:37,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371442352] [2022-11-26 00:33:37,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:33:37,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:33:37,296 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-26 00:33:37,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1591607292] [2022-11-26 00:33:37,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:33:37,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:33:37,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b955c-763d-412f-9701-5fc65be5f226/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:33:37,303 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b955c-763d-412f-9701-5fc65be5f226/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:33:37,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b955c-763d-412f-9701-5fc65be5f226/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-26 00:33:37,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:33:37,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-26 00:33:37,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:33:37,420 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:33:37,420 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:33:37,465 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:33:37,465 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:33:37,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371442352] [2022-11-26 00:33:37,466 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-26 00:33:37,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1591607292] [2022-11-26 00:33:37,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1591607292] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:33:37,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [746340341] [2022-11-26 00:33:37,487 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-11-26 00:33:37,488 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:33:37,492 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:33:37,498 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:33:37,499 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:33:37,794 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 14 for LOIs [2022-11-26 00:33:37,800 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:33:38,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [746340341] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:33:38,117 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-26 00:33:38,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [4, 4] total 15 [2022-11-26 00:33:38,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575642522] [2022-11-26 00:33:38,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:33:38,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-26 00:33:38,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:33:38,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-26 00:33:38,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2022-11-26 00:33:38,120 INFO L87 Difference]: Start difference. First operand 39 states and 56 transitions. Second operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 8 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:33:38,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:33:38,818 INFO L93 Difference]: Finished difference Result 78 states and 117 transitions. [2022-11-26 00:33:38,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-26 00:33:38,819 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 8 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-26 00:33:38,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:33:38,821 INFO L225 Difference]: With dead ends: 78 [2022-11-26 00:33:38,821 INFO L226 Difference]: Without dead ends: 59 [2022-11-26 00:33:38,822 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2022-11-26 00:33:38,823 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 10 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-26 00:33:38,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 86 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-26 00:33:38,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-11-26 00:33:38,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 47. [2022-11-26 00:33:38,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 25 states have (on average 1.24) internal successors, (31), 28 states have internal predecessors, (31), 18 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-26 00:33:38,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 64 transitions. [2022-11-26 00:33:38,851 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 64 transitions. Word has length 12 [2022-11-26 00:33:38,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:33:38,852 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 64 transitions. [2022-11-26 00:33:38,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 8 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:33:38,852 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 64 transitions. [2022-11-26 00:33:38,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-26 00:33:38,853 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:33:38,854 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:33:38,872 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b955c-763d-412f-9701-5fc65be5f226/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-26 00:33:39,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b955c-763d-412f-9701-5fc65be5f226/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:33:39,072 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:33:39,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:33:39,073 INFO L85 PathProgramCache]: Analyzing trace with hash 600084205, now seen corresponding path program 1 times [2022-11-26 00:33:39,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:33:39,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516699588] [2022-11-26 00:33:39,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:33:39,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:33:39,091 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-26 00:33:39,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [779085752] [2022-11-26 00:33:39,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:33:39,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:33:39,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b955c-763d-412f-9701-5fc65be5f226/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:33:39,095 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b955c-763d-412f-9701-5fc65be5f226/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:33:39,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b955c-763d-412f-9701-5fc65be5f226/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-26 00:33:39,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:33:39,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-26 00:33:39,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:33:39,224 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:33:39,224 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:33:39,289 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:33:39,289 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:33:39,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516699588] [2022-11-26 00:33:39,290 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-26 00:33:39,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779085752] [2022-11-26 00:33:39,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [779085752] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:33:39,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1626011559] [2022-11-26 00:33:39,295 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-11-26 00:33:39,295 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:33:39,296 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:33:39,296 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:33:39,296 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:33:39,562 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 16 for LOIs [2022-11-26 00:33:39,573 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:33:39,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1626011559] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:33:39,926 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-26 00:33:39,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [5, 5] total 16 [2022-11-26 00:33:39,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998909140] [2022-11-26 00:33:39,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:33:39,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-26 00:33:39,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:33:39,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-26 00:33:39,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2022-11-26 00:33:39,928 INFO L87 Difference]: Start difference. First operand 47 states and 64 transitions. Second operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 8 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:33:42,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:33:42,601 INFO L93 Difference]: Finished difference Result 68 states and 96 transitions. [2022-11-26 00:33:42,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-26 00:33:42,606 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 8 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-26 00:33:42,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:33:42,607 INFO L225 Difference]: With dead ends: 68 [2022-11-26 00:33:42,608 INFO L226 Difference]: Without dead ends: 65 [2022-11-26 00:33:42,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2022-11-26 00:33:42,609 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 7 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-26 00:33:42,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 149 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-26 00:33:42,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-11-26 00:33:42,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 49. [2022-11-26 00:33:42,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 30 states have internal predecessors, (34), 18 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-26 00:33:42,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 67 transitions. [2022-11-26 00:33:42,649 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 67 transitions. Word has length 13 [2022-11-26 00:33:42,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:33:42,649 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 67 transitions. [2022-11-26 00:33:42,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 8 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:33:42,650 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 67 transitions. [2022-11-26 00:33:42,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-26 00:33:42,651 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:33:42,651 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:33:42,663 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b955c-763d-412f-9701-5fc65be5f226/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-26 00:33:42,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b955c-763d-412f-9701-5fc65be5f226/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-26 00:33:42,857 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:33:42,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:33:42,858 INFO L85 PathProgramCache]: Analyzing trace with hash 601573755, now seen corresponding path program 1 times [2022-11-26 00:33:42,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:33:42,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838992826] [2022-11-26 00:33:42,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:33:42,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:33:42,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:33:43,244 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:33:43,245 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:33:43,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838992826] [2022-11-26 00:33:43,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838992826] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:33:43,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1470005389] [2022-11-26 00:33:43,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:33:43,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:33:43,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b955c-763d-412f-9701-5fc65be5f226/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:33:43,248 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b955c-763d-412f-9701-5fc65be5f226/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:33:43,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b955c-763d-412f-9701-5fc65be5f226/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-26 00:33:43,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:33:43,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-26 00:33:43,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:33:43,447 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:33:43,447 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:33:43,618 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:33:43,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1470005389] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:33:43,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1104441330] [2022-11-26 00:33:43,620 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-11-26 00:33:43,621 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:33:43,621 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:33:43,621 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:33:43,622 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:33:43,830 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 27 for LOIs [2022-11-26 00:33:43,879 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:33:44,457 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1215#(and (<= 2 ~counter~0) (< ~counter~0 6) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-26 00:33:44,457 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 00:33:44,458 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-26 00:33:44,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2022-11-26 00:33:44,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242761652] [2022-11-26 00:33:44,458 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-26 00:33:44,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-26 00:33:44,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:33:44,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-26 00:33:44,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=435, Unknown=0, NotChecked=0, Total=506 [2022-11-26 00:33:44,460 INFO L87 Difference]: Start difference. First operand 49 states and 67 transitions. Second operand has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 11 states have internal predecessors, (29), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:33:46,581 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-26 00:33:48,588 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-26 00:33:52,955 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-26 00:33:58,906 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-26 00:34:00,909 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-26 00:34:03,743 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-26 00:34:05,745 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-26 00:34:09,216 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-26 00:34:12,337 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-26 00:34:13,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:34:13,447 INFO L93 Difference]: Finished difference Result 116 states and 177 transitions. [2022-11-26 00:34:13,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-26 00:34:13,448 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 11 states have internal predecessors, (29), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-26 00:34:13,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:34:13,449 INFO L225 Difference]: With dead ends: 116 [2022-11-26 00:34:13,449 INFO L226 Difference]: Without dead ends: 89 [2022-11-26 00:34:13,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=112, Invalid=644, Unknown=0, NotChecked=0, Total=756 [2022-11-26 00:34:13,451 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 79 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 186 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.7s IncrementalHoareTripleChecker+Time [2022-11-26 00:34:13,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 214 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 256 Invalid, 6 Unknown, 0 Unchecked, 28.7s Time] [2022-11-26 00:34:13,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-11-26 00:34:13,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 67. [2022-11-26 00:34:13,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 34 states have (on average 1.2352941176470589) internal successors, (42), 37 states have internal predecessors, (42), 29 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2022-11-26 00:34:13,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 98 transitions. [2022-11-26 00:34:13,475 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 98 transitions. Word has length 13 [2022-11-26 00:34:13,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:34:13,476 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 98 transitions. [2022-11-26 00:34:13,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 11 states have internal predecessors, (29), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:34:13,476 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 98 transitions. [2022-11-26 00:34:13,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-26 00:34:13,477 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:34:13,477 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:34:13,489 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b955c-763d-412f-9701-5fc65be5f226/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-26 00:34:13,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b955c-763d-412f-9701-5fc65be5f226/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-26 00:34:13,684 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:34:13,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:34:13,684 INFO L85 PathProgramCache]: Analyzing trace with hash -339513844, now seen corresponding path program 1 times [2022-11-26 00:34:13,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:34:13,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879035349] [2022-11-26 00:34:13,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:34:13,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:34:13,703 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-26 00:34:13,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1980871089] [2022-11-26 00:34:13,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:34:13,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:34:13,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b955c-763d-412f-9701-5fc65be5f226/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:34:13,705 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b955c-763d-412f-9701-5fc65be5f226/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:34:13,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b955c-763d-412f-9701-5fc65be5f226/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-26 00:34:13,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:34:13,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-26 00:34:13,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:34:14,175 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-26 00:34:14,175 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:34:26,233 WARN L837 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~r~0#1| Int) (|ULTIMATE.start_main_~n~0#1| Int)) (or (= (mod (+ (* |c_ULTIMATE.start_main_~p~0#1| 16 |ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1|) (* |c_ULTIMATE.start_main_~h~0#1| |ULTIMATE.start_main_~n~0#1| 4294967284 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~r~0#1| 4294967280 |c_ULTIMATE.start_main_~q~0#1|) (* 4294967295 |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~h~0#1| |ULTIMATE.start_main_~r~0#1| 12 |c_ULTIMATE.start_main_~q~0#1|) (* 4294967292 |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~q~0#1|)) 4294967296) 0) (not (= (mod (* |ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~q~0#1|) 4294967296) (mod (+ (* |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~p~0#1|) (* |ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~q~0#1|)) 4294967296))))) is different from false [2022-11-26 00:34:26,863 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:34:26,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879035349] [2022-11-26 00:34:26,863 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-26 00:34:26,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1980871089] [2022-11-26 00:34:26,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1980871089] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:34:26,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1131181360] [2022-11-26 00:34:26,868 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-26 00:34:26,869 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:34:26,869 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:34:26,872 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:34:26,872 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:34:27,155 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 70 for LOIs [2022-11-26 00:34:27,322 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:34:32,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1131181360] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:34:32,191 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-26 00:34:32,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [8] total 16 [2022-11-26 00:34:32,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341962527] [2022-11-26 00:34:32,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:34:32,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-26 00:34:32,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:34:32,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-26 00:34:32,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=4, NotChecked=32, Total=342 [2022-11-26 00:34:32,195 INFO L87 Difference]: Start difference. First operand 67 states and 98 transitions. Second operand has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 8 states have internal predecessors, (11), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-26 00:34:34,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:34:34,247 INFO L93 Difference]: Finished difference Result 74 states and 104 transitions. [2022-11-26 00:34:34,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-26 00:34:34,248 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 8 states have internal predecessors, (11), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2022-11-26 00:34:34,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:34:34,250 INFO L225 Difference]: With dead ends: 74 [2022-11-26 00:34:34,250 INFO L226 Difference]: Without dead ends: 54 [2022-11-26 00:34:34,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 21 SyntacticMatches, 6 SemanticMatches, 17 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 15.3s TimeCoverageRelationStatistics Valid=69, Invalid=237, Unknown=4, NotChecked=32, Total=342 [2022-11-26 00:34:34,251 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 1 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:34:34,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 107 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-26 00:34:34,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-11-26 00:34:34,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2022-11-26 00:34:34,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 28 states have (on average 1.25) internal successors, (35), 31 states have internal predecessors, (35), 23 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2022-11-26 00:34:34,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 79 transitions. [2022-11-26 00:34:34,266 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 79 transitions. Word has length 20 [2022-11-26 00:34:34,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:34:34,266 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 79 transitions. [2022-11-26 00:34:34,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 8 states have internal predecessors, (11), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-26 00:34:34,267 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 79 transitions. [2022-11-26 00:34:34,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-26 00:34:34,268 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:34:34,268 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:34:34,279 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b955c-763d-412f-9701-5fc65be5f226/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-26 00:34:34,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b955c-763d-412f-9701-5fc65be5f226/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:34:34,475 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:34:34,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:34:34,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1744099301, now seen corresponding path program 1 times [2022-11-26 00:34:34,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:34:34,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300528193] [2022-11-26 00:34:34,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:34:34,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:34:34,482 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-26 00:34:34,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [165969609] [2022-11-26 00:34:34,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:34:34,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:34:34,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b955c-763d-412f-9701-5fc65be5f226/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:34:34,484 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b955c-763d-412f-9701-5fc65be5f226/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:34:34,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b955c-763d-412f-9701-5fc65be5f226/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-26 00:34:34,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:34:34,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-26 00:34:34,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:34:35,305 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-26 00:34:35,305 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:34:46,698 WARN L837 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~q~0#1| Int) (|ULTIMATE.start_main_~r~0#1| Int) (|ULTIMATE.start_main_~n~0#1| Int)) (or (not (= (mod (+ (* |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~p~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|)) 4294967296) (mod (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~q~0#1|) 4294967296))) (= (mod (+ (* |c_ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1| 4294967280) (* |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1|) (* |c_ULTIMATE.start_main_~h~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1| 12) (* 4294967295 |c_ULTIMATE.start_main_~h~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~p~0#1| 16 |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~h~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~q~0#1| 4294967284) (* 4294967292 |c_ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~q~0#1|)) 4294967296) 0))) is different from false [2022-11-26 00:34:48,700 WARN L859 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~q~0#1| Int) (|ULTIMATE.start_main_~r~0#1| Int) (|ULTIMATE.start_main_~n~0#1| Int)) (or (not (= (mod (+ (* |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~p~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|)) 4294967296) (mod (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~q~0#1|) 4294967296))) (= (mod (+ (* |c_ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1| 4294967280) (* |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1|) (* |c_ULTIMATE.start_main_~h~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1| 12) (* 4294967295 |c_ULTIMATE.start_main_~h~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~p~0#1| 16 |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~h~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~q~0#1| 4294967284) (* 4294967292 |c_ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~q~0#1|)) 4294967296) 0))) is different from true [2022-11-26 00:34:48,701 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:34:48,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300528193] [2022-11-26 00:34:48,701 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-26 00:34:48,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165969609] [2022-11-26 00:34:48,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [165969609] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:34:48,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1462912869] [2022-11-26 00:34:48,704 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-26 00:34:48,704 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:34:48,704 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:34:48,704 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:34:48,705 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:34:49,388 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 13 for LOIs [2022-11-26 00:34:49,394 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:35:00,804 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1919#(and (<= 2 ~counter~0) (<= ~counter~0 6) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-26 00:35:00,804 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 00:35:00,804 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-26 00:35:00,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2022-11-26 00:35:00,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441242904] [2022-11-26 00:35:00,805 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-26 00:35:00,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-26 00:35:00,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:35:00,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-26 00:35:00,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=365, Unknown=5, NotChecked=40, Total=506 [2022-11-26 00:35:00,806 INFO L87 Difference]: Start difference. First operand 54 states and 79 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-26 00:35:02,818 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-26 00:35:05,516 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-26 00:35:07,594 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-26 00:35:09,596 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-26 00:35:11,597 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-26 00:35:15,273 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-26 00:35:17,493 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-26 00:35:18,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:35:18,856 INFO L93 Difference]: Finished difference Result 64 states and 87 transitions. [2022-11-26 00:35:18,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-26 00:35:18,857 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2022-11-26 00:35:18,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:35:18,858 INFO L225 Difference]: With dead ends: 64 [2022-11-26 00:35:18,858 INFO L226 Difference]: Without dead ends: 61 [2022-11-26 00:35:18,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 21.3s TimeCoverageRelationStatistics Valid=110, Invalid=441, Unknown=5, NotChecked=44, Total=600 [2022-11-26 00:35:18,859 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 14 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 11 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.6s IncrementalHoareTripleChecker+Time [2022-11-26 00:35:18,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 57 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 127 Invalid, 7 Unknown, 0 Unchecked, 17.6s Time] [2022-11-26 00:35:18,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-11-26 00:35:18,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2022-11-26 00:35:18,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 36 states have internal predecessors, (40), 22 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2022-11-26 00:35:18,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 83 transitions. [2022-11-26 00:35:18,911 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 83 transitions. Word has length 23 [2022-11-26 00:35:18,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:35:18,912 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 83 transitions. [2022-11-26 00:35:18,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-26 00:35:18,912 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 83 transitions. [2022-11-26 00:35:18,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-26 00:35:18,913 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:35:18,914 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:35:18,924 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b955c-763d-412f-9701-5fc65be5f226/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-26 00:35:19,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b955c-763d-412f-9701-5fc65be5f226/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:35:19,120 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:35:19,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:35:19,120 INFO L85 PathProgramCache]: Analyzing trace with hash -787687870, now seen corresponding path program 1 times [2022-11-26 00:35:19,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:35:19,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092224895] [2022-11-26 00:35:19,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:35:19,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:35:19,131 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-26 00:35:19,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [612480703] [2022-11-26 00:35:19,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:35:19,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:35:19,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b955c-763d-412f-9701-5fc65be5f226/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:35:19,133 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b955c-763d-412f-9701-5fc65be5f226/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:35:19,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b955c-763d-412f-9701-5fc65be5f226/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-26 00:35:19,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:35:19,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-26 00:35:19,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:35:19,325 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-26 00:35:19,325 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:35:19,395 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-26 00:35:19,396 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:35:19,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092224895] [2022-11-26 00:35:19,396 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-26 00:35:19,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [612480703] [2022-11-26 00:35:19,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [612480703] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:35:19,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [739764580] [2022-11-26 00:35:19,399 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2022-11-26 00:35:19,399 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:35:19,400 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:35:19,400 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:35:19,400 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:35:48,436 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 13 for LOIs [2022-11-26 00:35:48,443 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:36:04,774 WARN L837 $PredicateComparison]: unable to prove that (and (<= |c_ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |c_ULTIMATE.start_assume_abort_if_not_~cond#1|) (= |c_#NULL.offset| 0) (not (= (ite (< (mod |c_ULTIMATE.start_main_~r~0#1| 4294967296) (mod (+ (* |c_ULTIMATE.start_main_~p~0#1| 2) |c_ULTIMATE.start_main_~q~0#1|) 4294967296)) 1 0) 0)) (<= c_~counter~0 6) (= |c_#NULL.base| 0) (<= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (not (= (ite (= (mod (+ (* |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~p~0#1|) (* |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~q~0#1|)) 4294967296) (mod (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~q~0#1|) 4294967296)) 1 0) 0)) (not (= (ite (= 0 (mod (+ (* |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~r~0#1| 12 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~r~0#1| 4294967280 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~p~0#1| 16 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~h~0#1| 4294967284 |c_ULTIMATE.start_main_~q~0#1|) (* 4294967295 |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* 4294967292 |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~q~0#1|)) 4294967296)) 1 0) 0)) (<= 0 |c_ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |c_#StackHeapBarrier|) (<= 2 c_~counter~0)) is different from false [2022-11-26 00:36:06,780 WARN L837 $PredicateComparison]: unable to prove that (and (<= |c_ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |c_ULTIMATE.start_assume_abort_if_not_~cond#1|) (= |c_#NULL.offset| 0) (not (= (ite (< (mod |c_ULTIMATE.start_main_~r~0#1| 4294967296) (mod (+ (* |c_ULTIMATE.start_main_~p~0#1| 2) |c_ULTIMATE.start_main_~q~0#1|) 4294967296)) 1 0) 0)) (<= c_~counter~0 6) (= |c_#NULL.base| 0) (<= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (not (= (ite (= (mod (+ (* |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~p~0#1|) (* |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~q~0#1|)) 4294967296) (mod (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~q~0#1|) 4294967296)) 1 0) 0)) (not (= (ite (= 0 (mod (+ (* |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~r~0#1| 12 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~r~0#1| 4294967280 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~p~0#1| 16 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~h~0#1| 4294967284 |c_ULTIMATE.start_main_~q~0#1|) (* 4294967295 |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* 4294967292 |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~q~0#1|)) 4294967296)) 1 0) 0)) (not (= (ite (= (mod (+ (* |c_ULTIMATE.start_main_~n~0#1| 4294967288 |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| 4294967292 |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~h~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~n~0#1| 4 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| 4294967295 |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~r~0#1| 4) (* 4294967295 |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~r~0#1|) (* |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~r~0#1| 4 |c_ULTIMATE.start_main_~q~0#1|)) 4294967296) 0) 1 0) 0)) (<= 0 |c_ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |c_#StackHeapBarrier|) (<= 2 c_~counter~0)) is different from false [2022-11-26 00:36:08,790 WARN L837 $PredicateComparison]: unable to prove that (and (<= |c_ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |c_ULTIMATE.start_assume_abort_if_not_~cond#1|) (= |c_#NULL.offset| 0) (not (= (ite (< (mod |c_ULTIMATE.start_main_~r~0#1| 4294967296) (mod (+ (* |c_ULTIMATE.start_main_~p~0#1| 2) |c_ULTIMATE.start_main_~q~0#1|) 4294967296)) 1 0) 0)) (<= c_~counter~0 6) (= |c_#NULL.base| 0) (<= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (not (= (ite (= (mod (+ (* |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~p~0#1|) (* |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~q~0#1|)) 4294967296) (mod (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~q~0#1|) 4294967296)) 1 0) 0)) (not (= (ite (= (mod (+ (* |c_ULTIMATE.start_main_~n~0#1| 4294967292 |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~p~0#1| 4 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~r~0#1| 4 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1|) (* |c_ULTIMATE.start_main_~p~0#1| 4294967295 |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* 4294967292 |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~q~0#1|)) 4294967296) 0) 1 0) 0)) (not (= (ite (= 0 (mod (+ (* |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~r~0#1| 12 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~r~0#1| 4294967280 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~p~0#1| 16 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~h~0#1| 4294967284 |c_ULTIMATE.start_main_~q~0#1|) (* 4294967295 |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* 4294967292 |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~q~0#1|)) 4294967296)) 1 0) 0)) (not (= (ite (= (mod (+ (* |c_ULTIMATE.start_main_~n~0#1| 4294967288 |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| 4294967292 |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~h~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~n~0#1| 4 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| 4294967295 |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~r~0#1| 4) (* 4294967295 |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~r~0#1|) (* |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~r~0#1| 4 |c_ULTIMATE.start_main_~q~0#1|)) 4294967296) 0) 1 0) 0)) (<= 0 |c_ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |c_#StackHeapBarrier|) (<= 2 c_~counter~0)) is different from false [2022-11-26 00:36:10,888 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (* |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~p~0#1|)) (.cse1 (* |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~q~0#1|))) (and (not (= (ite (= (mod (+ .cse0 .cse1 (* |c_ULTIMATE.start_main_~n~0#1| 4294967295 |c_ULTIMATE.start_main_~q~0#1|)) 4294967296) 0) 1 0) 0)) (<= |c_ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |c_ULTIMATE.start_assume_abort_if_not_~cond#1|) (= |c_#NULL.offset| 0) (not (= (ite (< (mod |c_ULTIMATE.start_main_~r~0#1| 4294967296) (mod (+ (* |c_ULTIMATE.start_main_~p~0#1| 2) |c_ULTIMATE.start_main_~q~0#1|) 4294967296)) 1 0) 0)) (<= c_~counter~0 6) (= |c_#NULL.base| 0) (<= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (not (= (ite (= (mod (+ .cse0 .cse1) 4294967296) (mod (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~q~0#1|) 4294967296)) 1 0) 0)) (not (= (ite (= (mod (+ (* |c_ULTIMATE.start_main_~n~0#1| 4294967292 |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~p~0#1| 4 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~r~0#1| 4 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1|) (* |c_ULTIMATE.start_main_~p~0#1| 4294967295 |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* 4294967292 |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~q~0#1|)) 4294967296) 0) 1 0) 0)) (not (= (ite (= 0 (mod (+ (* |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~r~0#1| 12 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~r~0#1| 4294967280 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~p~0#1| 16 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~h~0#1| 4294967284 |c_ULTIMATE.start_main_~q~0#1|) (* 4294967295 |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* 4294967292 |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~q~0#1|)) 4294967296)) 1 0) 0)) (not (= (ite (= (mod (+ (* |c_ULTIMATE.start_main_~n~0#1| 4294967288 |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| 4294967292 |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~h~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~n~0#1| 4 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| 4294967295 |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~r~0#1| 4) (* 4294967295 |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~r~0#1|) (* |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~r~0#1| 4 |c_ULTIMATE.start_main_~q~0#1|)) 4294967296) 0) 1 0) 0)) (<= 0 |c_ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |c_#StackHeapBarrier|) (<= 2 c_~counter~0))) is different from false [2022-11-26 00:36:10,923 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2406#(and (<= 2 ~counter~0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= ~counter~0 7) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-26 00:36:10,923 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 00:36:10,923 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-26 00:36:10,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 9 [2022-11-26 00:36:10,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956630406] [2022-11-26 00:36:10,923 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-26 00:36:10,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-26 00:36:10,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:36:10,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-26 00:36:10,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=389, Unknown=6, NotChecked=172, Total=650 [2022-11-26 00:36:10,925 INFO L87 Difference]: Start difference. First operand 61 states and 83 transitions. Second operand has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-26 00:36:13,208 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-26 00:36:15,209 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-26 00:36:17,210 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-26 00:36:19,227 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-26 00:36:21,955 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-26 00:36:23,959 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-26 00:36:25,961 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-26 00:36:27,975 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-26 00:36:28,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:36:28,775 INFO L93 Difference]: Finished difference Result 125 states and 159 transitions. [2022-11-26 00:36:28,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-26 00:36:28,776 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 46 [2022-11-26 00:36:28,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:36:28,777 INFO L225 Difference]: With dead ends: 125 [2022-11-26 00:36:28,777 INFO L226 Difference]: Without dead ends: 116 [2022-11-26 00:36:28,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 109 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 22.5s TimeCoverageRelationStatistics Valid=95, Invalid=467, Unknown=6, NotChecked=188, Total=756 [2022-11-26 00:36:28,779 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 20 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 1 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.8s IncrementalHoareTripleChecker+Time [2022-11-26 00:36:28,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 193 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 86 Invalid, 8 Unknown, 0 Unchecked, 17.8s Time] [2022-11-26 00:36:28,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-11-26 00:36:28,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 108. [2022-11-26 00:36:28,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 61 states have (on average 1.1311475409836065) internal successors, (69), 63 states have internal predecessors, (69), 36 states have call successors, (36), 10 states have call predecessors, (36), 10 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2022-11-26 00:36:28,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 139 transitions. [2022-11-26 00:36:28,802 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 139 transitions. Word has length 46 [2022-11-26 00:36:28,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:36:28,802 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 139 transitions. [2022-11-26 00:36:28,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-26 00:36:28,803 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 139 transitions. [2022-11-26 00:36:28,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-26 00:36:28,805 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:36:28,805 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:36:28,816 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b955c-763d-412f-9701-5fc65be5f226/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-26 00:36:29,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b955c-763d-412f-9701-5fc65be5f226/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-26 00:36:29,011 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:36:29,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:36:29,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1687602719, now seen corresponding path program 1 times [2022-11-26 00:36:29,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:36:29,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43009093] [2022-11-26 00:36:29,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:36:29,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:36:29,021 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-26 00:36:29,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [12003960] [2022-11-26 00:36:29,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:36:29,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:36:29,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b955c-763d-412f-9701-5fc65be5f226/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:36:29,023 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b955c-763d-412f-9701-5fc65be5f226/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:36:29,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b955c-763d-412f-9701-5fc65be5f226/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-26 00:36:29,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:36:29,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 46 conjunts are in the unsatisfiable core [2022-11-26 00:36:29,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:36:29,892 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 23 proven. 16 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-26 00:36:29,892 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:36:35,521 WARN L837 $PredicateComparison]: unable to prove that (or (let ((.cse2 (div (mod |c_ULTIMATE.start_main_~q~0#1| 4294967296) 4))) (let ((.cse0 (<= (mod (+ .cse2 |c_ULTIMATE.start_main_~p~0#1|) 4294967296) (mod |c_ULTIMATE.start_main_~r~0#1| 4294967296))) (.cse1 (* 2 (div (mod |c_ULTIMATE.start_main_~p~0#1| 4294967296) 2)))) (and (or .cse0 (< |c_ULTIMATE.start_main_~r~0#1| (+ (mod (+ .cse1 .cse2) 4294967296) (* (div |c_ULTIMATE.start_main_~r~0#1| 4294967296) 4294967296)))) (or (not .cse0) (< |c_ULTIMATE.start_main_~r~0#1| (+ .cse2 |c_ULTIMATE.start_main_~p~0#1| (* (div (+ (- .cse2) (- |c_ULTIMATE.start_main_~p~0#1|) |c_ULTIMATE.start_main_~r~0#1|) 4294967296) 4294967296) (mod (+ .cse1 (* .cse2 3)) 4294967296))))))) (forall ((|ULTIMATE.start_main_~h~0#1| Int)) (not (= (mod (+ (* |c_ULTIMATE.start_main_~n~0#1| 4294967292 |ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~p~0#1| 4 |c_ULTIMATE.start_main_~q~0#1|) (* |ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~r~0#1| 4 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~h~0#1| |ULTIMATE.start_main_~h~0#1|) (* |c_ULTIMATE.start_main_~p~0#1| 4294967295 |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* 4294967292 |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~q~0#1|)) 4294967296) 0)))) is different from false [2022-11-26 00:36:35,525 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:36:35,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43009093] [2022-11-26 00:36:35,525 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-26 00:36:35,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12003960] [2022-11-26 00:36:35,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [12003960] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:36:35,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [335721518] [2022-11-26 00:36:35,527 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2022-11-26 00:36:35,527 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:36:35,527 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:36:35,527 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:36:35,527 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:37:04,968 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 13 for LOIs [2022-11-26 00:37:04,973 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:37:20,922 WARN L233 SmtUtils]: Spent 11.18s on a formula simplification. DAG size of input: 51 DAG size of output: 44 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:38:21,378 WARN L233 SmtUtils]: Spent 43.40s on a formula simplification. DAG size of input: 71 DAG size of output: 65 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:38:23,385 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (<= |c_ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1)) (.cse1 (<= 0 |c_ULTIMATE.start_assume_abort_if_not_~cond#1|)) (.cse2 (<= c_~counter~0 6)) (.cse6 (<= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (.cse10 (<= 0 |c_ULTIMATE.start_assume_abort_if_not_#in~cond#1|)) (.cse11 (<= 0 |c_#StackHeapBarrier|)) (.cse12 (<= 2 c_~counter~0))) (and .cse0 .cse1 .cse2 (<= 0 |c_#NULL.base|) (let ((.cse3 (= |c_#NULL.offset| 0)) (.cse4 (not (= (ite (< (mod |c_ULTIMATE.start_main_~r~0#1| 4294967296) (mod (+ (* |c_ULTIMATE.start_main_~p~0#1| 2) |c_ULTIMATE.start_main_~q~0#1|) 4294967296)) 1 0) 0))) (.cse5 (= |c_#NULL.base| 0)) (.cse7 (not (= (ite (= (mod (+ (* |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~p~0#1|) (* |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~q~0#1|)) 4294967296) (mod (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~q~0#1|) 4294967296)) 1 0) 0))) (.cse8 (not (= (ite (= 0 (mod (+ (* |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~r~0#1| 12 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~r~0#1| 4294967280 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~p~0#1| 16 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~h~0#1| 4294967284 |c_ULTIMATE.start_main_~q~0#1|) (* 4294967295 |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* 4294967292 |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~q~0#1|)) 4294967296)) 1 0) 0))) (.cse9 (not (= (ite (= (mod (+ (* |c_ULTIMATE.start_main_~n~0#1| 4294967288 |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| 4294967292 |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~h~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~n~0#1| 4 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| 4294967295 |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~r~0#1| 4) (* 4294967295 |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~r~0#1|) (* |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~r~0#1| 4 |c_ULTIMATE.start_main_~q~0#1|)) 4294967296) 0) 1 0) 0)))) (or (and .cse0 .cse1 (= |c_ULTIMATE.start_main_~p~0#1| 0) .cse3 .cse4 .cse2 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12) (and .cse0 .cse1 .cse3 .cse4 .cse2 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12))) .cse6 .cse10 (<= 0 |c_#NULL.offset|) .cse11 (<= |c_#NULL.base| 0) (<= |c_#NULL.offset| 0) .cse12)) is different from false [2022-11-26 00:38:25,404 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (<= |c_ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1)) (.cse1 (<= 0 |c_ULTIMATE.start_assume_abort_if_not_~cond#1|)) (.cse4 (<= c_~counter~0 6)) (.cse6 (<= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (.cse11 (<= 0 |c_ULTIMATE.start_assume_abort_if_not_#in~cond#1|)) (.cse12 (<= 0 |c_#StackHeapBarrier|)) (.cse13 (<= 2 c_~counter~0))) (and .cse0 .cse1 (let ((.cse2 (= |c_#NULL.offset| 0)) (.cse3 (not (= (ite (< (mod |c_ULTIMATE.start_main_~r~0#1| 4294967296) (mod (+ (* |c_ULTIMATE.start_main_~p~0#1| 2) |c_ULTIMATE.start_main_~q~0#1|) 4294967296)) 1 0) 0))) (.cse5 (= |c_#NULL.base| 0)) (.cse7 (not (= (ite (= (mod (+ (* |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~p~0#1|) (* |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~q~0#1|)) 4294967296) (mod (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~q~0#1|) 4294967296)) 1 0) 0))) (.cse8 (not (= (ite (= (mod (+ (* |c_ULTIMATE.start_main_~n~0#1| 4294967292 |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~p~0#1| 4 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~r~0#1| 4 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1|) (* |c_ULTIMATE.start_main_~p~0#1| 4294967295 |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* 4294967292 |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~q~0#1|)) 4294967296) 0) 1 0) 0))) (.cse9 (not (= (ite (= 0 (mod (+ (* |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~r~0#1| 12 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~r~0#1| 4294967280 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~p~0#1| 16 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~h~0#1| 4294967284 |c_ULTIMATE.start_main_~q~0#1|) (* 4294967295 |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* 4294967292 |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~q~0#1|)) 4294967296)) 1 0) 0))) (.cse10 (not (= (ite (= (mod (+ (* |c_ULTIMATE.start_main_~n~0#1| 4294967288 |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| 4294967292 |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~h~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~n~0#1| 4 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| 4294967295 |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~r~0#1| 4) (* 4294967295 |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~r~0#1|) (* |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~r~0#1| 4 |c_ULTIMATE.start_main_~q~0#1|)) 4294967296) 0) 1 0) 0)))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13) (and .cse0 .cse1 (= |c_ULTIMATE.start_main_~p~0#1| 0) .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13))) .cse4 (<= 0 |c_#NULL.base|) .cse6 .cse11 (<= 0 |c_#NULL.offset|) .cse12 (<= |c_#NULL.base| 0) (<= |c_#NULL.offset| 0) .cse13)) is different from false [2022-11-26 00:39:55,673 WARN L233 SmtUtils]: Spent 1.06m on a formula simplification. DAG size of input: 107 DAG size of output: 92 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:39:55,676 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2982#(and (<= 2 ~counter~0) (<= ~counter~0 6) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-26 00:39:55,676 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 00:39:55,676 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-26 00:39:55,676 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2022-11-26 00:39:55,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784242627] [2022-11-26 00:39:55,676 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-26 00:39:55,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-26 00:39:55,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:39:55,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-26 00:39:55,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=929, Unknown=19, NotChecked=192, Total=1260 [2022-11-26 00:39:55,678 INFO L87 Difference]: Start difference. First operand 108 states and 139 transitions. Second operand has 16 states, 16 states have (on average 1.5) internal successors, (24), 14 states have internal predecessors, (24), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-26 00:39:57,928 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-26 00:40:00,913 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-26 00:40:02,914 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-26 00:40:04,972 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-26 00:40:07,841 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-26 00:40:09,903 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-26 00:40:11,754 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-26 00:40:14,451 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-26 00:40:16,697 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-26 00:40:18,698 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-26 00:40:20,700 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-26 00:40:22,701 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-26 00:40:24,703 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-26 00:40:28,054 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-26 00:40:30,513 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-26 00:40:31,720 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-26 00:40:33,721 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-26 00:40:35,724 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-26 00:40:37,726 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-26 00:40:39,732 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-26 00:40:41,734 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-26 00:40:43,735 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-26 00:40:45,738 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-26 00:40:47,740 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-26 00:40:50,128 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-26 00:40:52,140 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-26 00:40:54,145 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-26 00:40:56,848 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-26 00:40:58,850 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-26 00:41:00,852 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-26 00:41:03,755 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-26 00:41:03,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:41:03,756 INFO L93 Difference]: Finished difference Result 125 states and 159 transitions. [2022-11-26 00:41:03,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-26 00:41:03,757 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.5) internal successors, (24), 14 states have internal predecessors, (24), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 49 [2022-11-26 00:41:03,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:41:03,758 INFO L225 Difference]: With dead ends: 125 [2022-11-26 00:41:03,759 INFO L226 Difference]: Without dead ends: 123 [2022-11-26 00:41:03,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 173.5s TimeCoverageRelationStatistics Valid=134, Invalid=1049, Unknown=19, NotChecked=204, Total=1406 [2022-11-26 00:41:03,760 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 10 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 629 mSolverCounterSat, 5 mSolverCounterUnsat, 27 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 67.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 629 IncrementalHoareTripleChecker+Invalid, 27 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 68.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:41:03,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 167 Invalid, 661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 629 Invalid, 27 Unknown, 0 Unchecked, 68.0s Time] [2022-11-26 00:41:03,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2022-11-26 00:41:03,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 119. [2022-11-26 00:41:03,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 69 states have (on average 1.1159420289855073) internal successors, (77), 72 states have internal predecessors, (77), 37 states have call successors, (37), 12 states have call predecessors, (37), 12 states have return successors, (35), 34 states have call predecessors, (35), 35 states have call successors, (35) [2022-11-26 00:41:03,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 149 transitions. [2022-11-26 00:41:03,783 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 149 transitions. Word has length 49 [2022-11-26 00:41:03,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:41:03,783 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 149 transitions. [2022-11-26 00:41:03,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.5) internal successors, (24), 14 states have internal predecessors, (24), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-26 00:41:03,784 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 149 transitions. [2022-11-26 00:41:03,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-26 00:41:03,786 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:41:03,786 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:41:03,799 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b955c-763d-412f-9701-5fc65be5f226/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-11-26 00:41:03,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b955c-763d-412f-9701-5fc65be5f226/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-26 00:41:03,992 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:41:03,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:41:03,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1629435887, now seen corresponding path program 2 times [2022-11-26 00:41:03,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:41:03,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27707621] [2022-11-26 00:41:03,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:41:03,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:41:04,001 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-26 00:41:04,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [746951227] [2022-11-26 00:41:04,001 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-26 00:41:04,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:41:04,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b955c-763d-412f-9701-5fc65be5f226/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:41:04,003 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b955c-763d-412f-9701-5fc65be5f226/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:41:04,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d6b955c-763d-412f-9701-5fc65be5f226/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-26 00:41:04,116 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-26 00:41:04,116 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 00:41:04,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-26 00:41:04,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:41:04,495 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 14 proven. 7 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-11-26 00:41:04,496 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:41:28,066 WARN L233 SmtUtils]: Spent 12.88s on a formula simplification that was a NOOP. DAG size: 32 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:42:29,971 WARN L233 SmtUtils]: Spent 10.69s on a formula simplification that was a NOOP. DAG size: 35 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:43:28,614 WARN L233 SmtUtils]: Spent 22.74s on a formula simplification that was a NOOP. DAG size: 39 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:43:55,023 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 14 proven. 7 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-11-26 00:43:55,024 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:43:55,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27707621] [2022-11-26 00:43:55,024 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-26 00:43:55,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [746951227] [2022-11-26 00:43:55,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [746951227] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:43:55,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [336169141] [2022-11-26 00:43:55,026 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2022-11-26 00:43:55,027 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:43:55,027 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:43:55,027 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:43:55,027 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:44:20,028 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 13 for LOIs [2022-11-26 00:44:20,033 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:45:18,951 WARN L233 SmtUtils]: Spent 25.68s on a formula simplification. DAG size of input: 51 DAG size of output: 44 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:46:20,753 WARN L233 SmtUtils]: Spent 38.44s on a formula simplification. DAG size of input: 71 DAG size of output: 65 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:46:22,761 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (<= |c_ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1)) (.cse1 (<= 0 |c_ULTIMATE.start_assume_abort_if_not_~cond#1|)) (.cse2 (<= c_~counter~0 6)) (.cse6 (<= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (.cse10 (<= 0 |c_ULTIMATE.start_assume_abort_if_not_#in~cond#1|)) (.cse11 (<= 0 |c_#StackHeapBarrier|)) (.cse12 (<= 2 c_~counter~0))) (and .cse0 .cse1 .cse2 (<= 0 |c_#NULL.base|) (let ((.cse3 (= |c_#NULL.offset| 0)) (.cse4 (not (= (ite (< (mod |c_ULTIMATE.start_main_~r~0#1| 4294967296) (mod (+ (* |c_ULTIMATE.start_main_~p~0#1| 2) |c_ULTIMATE.start_main_~q~0#1|) 4294967296)) 1 0) 0))) (.cse5 (= |c_#NULL.base| 0)) (.cse7 (not (= (ite (= (mod (+ (* |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~p~0#1|) (* |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~q~0#1|)) 4294967296) (mod (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~q~0#1|) 4294967296)) 1 0) 0))) (.cse8 (not (= (ite (= 0 (mod (+ (* |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~r~0#1| 12 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~r~0#1| 4294967280 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~p~0#1| 16 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~h~0#1| 4294967284 |c_ULTIMATE.start_main_~q~0#1|) (* 4294967295 |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* 4294967292 |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~q~0#1|)) 4294967296)) 1 0) 0))) (.cse9 (not (= (ite (= (mod (+ (* |c_ULTIMATE.start_main_~n~0#1| 4294967288 |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| 4294967292 |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~h~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~n~0#1| 4 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| 4294967295 |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~r~0#1| 4) (* 4294967295 |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~r~0#1|) (* |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~r~0#1| 4 |c_ULTIMATE.start_main_~q~0#1|)) 4294967296) 0) 1 0) 0)))) (or (and .cse0 .cse1 (= |c_ULTIMATE.start_main_~p~0#1| 0) .cse3 .cse4 .cse2 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12) (and .cse0 .cse1 .cse3 .cse4 .cse2 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12))) .cse6 .cse10 (<= 0 |c_#NULL.offset|) .cse11 (<= |c_#NULL.base| 0) (<= |c_#NULL.offset| 0) .cse12)) is different from false [2022-11-26 00:47:41,173 WARN L233 SmtUtils]: Spent 1.03m on a formula simplification. DAG size of input: 100 DAG size of output: 93 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:48:05,474 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3684#(and (<= 2 ~counter~0) (<= ~counter~0 6) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-26 00:48:05,474 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 00:48:05,474 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-26 00:48:05,474 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-11-26 00:48:05,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397258050] [2022-11-26 00:48:05,475 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-26 00:48:05,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-26 00:48:05,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:48:05,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-26 00:48:05,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=627, Unknown=26, NotChecked=52, Total=812 [2022-11-26 00:48:05,476 INFO L87 Difference]: Start difference. First operand 119 states and 149 transitions. Second operand has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 12 states have internal predecessors, (32), 4 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2022-11-26 00:48:07,515 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse6 (mod |c_ULTIMATE.start_main_~q~0#1| 4294967296))) (let ((.cse5 (div (mod |c_ULTIMATE.start_main_~p~0#1| 4294967296) 2)) (.cse4 (div .cse6 4)) (.cse12 (mod |c_ULTIMATE.start_main_~r~0#1| 4294967296))) (let ((.cse3 (<= (mod (+ .cse4 |c_ULTIMATE.start_main_~p~0#1|) 4294967296) .cse12)) (.cse1 (* .cse4 |c_ULTIMATE.start_main_~r~0#1|)) (.cse0 (mod (* |c_ULTIMATE.start_main_~n~0#1| .cse4) 4294967296)) (.cse2 (* .cse5 .cse5))) (and (= (mod (+ (* |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~p~0#1|) (* |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~q~0#1|)) 4294967296) (mod (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~q~0#1|) 4294967296)) (or (= .cse0 (mod (+ .cse1 .cse2) 4294967296)) .cse3) (or (not .cse3) (= (mod (+ .cse1 .cse2 (* .cse4 |c_ULTIMATE.start_main_~p~0#1| 4294967295) (* .cse4 2 .cse5)) 4294967296) .cse0)) (let ((.cse11 (mod |c_ULTIMATE.start_main_~q~0#1| 1073741824)) (.cse7 (mod |c_ULTIMATE.start_main_~n~0#1| 4294967296))) (or (not (<= .cse6 .cse7)) (let ((.cse8 (<= (mod (+ .cse11 |c_ULTIMATE.start_main_~p~0#1|) 4294967296) .cse12)) (.cse9 (mod (* |c_ULTIMATE.start_main_~n~0#1| .cse11) 4294967296)) (.cse10 (* .cse11 |c_ULTIMATE.start_main_~r~0#1|))) (and (or (not .cse8) (= .cse9 (mod (+ .cse10 .cse2 (* .cse11 2 .cse5) (* .cse11 |c_ULTIMATE.start_main_~p~0#1| 4294967295)) 4294967296))) (or .cse8 (= .cse9 (mod (+ .cse10 .cse2) 4294967296))))) (<= (* .cse11 4) .cse7))))))) is different from false [2022-11-26 00:48:09,585 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse6 (div (mod |c_ULTIMATE.start_main_~p~0#1| 4294967296) 2)) (.cse8 (mod |c_ULTIMATE.start_main_~q~0#1| 4294967296)) (.cse13 (mod |c_ULTIMATE.start_main_~n~0#1| 4294967296))) (let ((.cse0 (<= .cse8 .cse13)) (.cse3 (* .cse6 .cse6)) (.cse7 (mod |c_ULTIMATE.start_main_~r~0#1| 4294967296))) (and (or .cse0 (let ((.cse5 (div .cse8 4))) (let ((.cse4 (<= (mod (+ .cse5 |c_ULTIMATE.start_main_~p~0#1|) 4294967296) .cse7)) (.cse2 (* .cse5 |c_ULTIMATE.start_main_~r~0#1|)) (.cse1 (mod (* |c_ULTIMATE.start_main_~n~0#1| .cse5) 4294967296))) (and (or (= .cse1 (mod (+ .cse2 .cse3) 4294967296)) .cse4) (or (not .cse4) (= (mod (+ .cse2 .cse3 (* .cse5 |c_ULTIMATE.start_main_~p~0#1| 4294967295) (* .cse5 2 .cse6)) 4294967296) .cse1)))))) (let ((.cse12 (mod |c_ULTIMATE.start_main_~q~0#1| 1073741824))) (or (not .cse0) (let ((.cse9 (<= (mod (+ .cse12 |c_ULTIMATE.start_main_~p~0#1|) 4294967296) .cse7)) (.cse10 (mod (* |c_ULTIMATE.start_main_~n~0#1| .cse12) 4294967296)) (.cse11 (* .cse12 |c_ULTIMATE.start_main_~r~0#1|))) (and (or (not .cse9) (= .cse10 (mod (+ .cse11 .cse3 (* .cse12 2 .cse6) (* .cse12 |c_ULTIMATE.start_main_~p~0#1| 4294967295)) 4294967296))) (or .cse9 (= .cse10 (mod (+ .cse11 .cse3) 4294967296))))) (<= (* .cse12 4) .cse13)))))) is different from false [2022-11-26 00:48:12,019 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-26 00:48:17,827 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-26 00:48:19,841 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []